Seven Underwater (Natural) Wonders of the World

There are many amazing forms of life and marvelous phenomena going on in underwater world of earth. In order to record and present them and to create awareness of their safety, CEDAM group has selected seven wonders of underwater world. All of them have unique forms of life and natural beauty in them. Short information about these seven wonders is presented below.

1. Belize Barrier Reef

Belize Barrier Reef (BBR) system is spread about 300 meters to about 40 km offshore and in length of about 320 km along the coastal line of Belize, a country of central America. It is the second largest reef system after the Great bareer reef system of Australia. It also considered one of the most diverse reef system so far following includes among the discovered species:

  • 70 hard coral species
  • 36 soft coral species
  • 500 species of fish’
  • Hundreds of invertebrate species

However it is approximated by a study report by Westminster College, in which auther Sue Wells mentioned that to date (2011) only 10% of species are discovered so far in the system and more than 90% reefs are still required to be reserched.

BBR (Belize Barrier Reef) has also a lot of attraction for tourist in addition to its research value for scientests and researchers. Atolls, beaches, lagoons and mangrove forests are intensly found in BBR . The largest island of the barrier is Ambergris Caye , which has three beautiful coral atolls in its surrounding namely Glover's Reef, Turneffe Islands and Lighthouse Reef . This area is also home of some of now endangered species of the world, which includes manatees, sea turtles and American crocodiles. In 1996, the Belize Barrier Reef has beenincluded in list of UNESCO World Heritage Sites .

Belize Barrier Reef

A markerBelize barrier reef -
Belize Barrier Reef, Belize
[get directions]

The barrier reef is clearly visible even in satellite images

Belize Barrier Reef

Click thumbnail to view full-size
Fish Hiding in the sea grass off The Barrier Reef off Ambergris Caye Belize Belize Barrier Reef - Image of an Under Water Coral unusual coral formation made of tube coral and brain coral, home of a little trunk fish and his friends. Brain corals are living creatures that can grow up to 6 foot high.Satellite image of Belize in May 2001 - The Barrier Reef is clearly visible along the length of  Belizean coast.Yellow TailGreat Blue HoleBeautiful Yellow Tail fish that exists in Belizean  Corel Reef systemBelize Barrier Reef  off the coast of Ambergris Caye. Close up on a course of Yellow Tail fish off the Barrier Reef near Ambergris Caye Belize.
Fish Hiding in the sea grass off The Barrier Reef off Ambergris Caye Belize
Fish Hiding in the sea grass off The Barrier Reef off Ambergris Caye Belize | Source
Belize Barrier Reef - Image of an Under Water Coral
Belize Barrier Reef - Image of an Under Water Coral | Source
unusual coral formation made of tube coral and brain coral, home of a little trunk fish and his friends. Brain corals are living creatures that can grow up to 6 foot high.
unusual coral formation made of tube coral and brain coral, home of a little trunk fish and his friends. Brain corals are living creatures that can grow up to 6 foot high. | Source
Satellite image of Belize in May 2001 - The Barrier Reef is clearly visible along the length of  Belizean coast.
Satellite image of Belize in May 2001 - The Barrier Reef is clearly visible along the length of Belizean coast. | Source
Yellow Tail
Yellow Tail | Source
Great Blue Hole
Great Blue Hole | Source
Beautiful Yellow Tail fish that exists in Belizean  Corel Reef system
Beautiful Yellow Tail fish that exists in Belizean Corel Reef system | Source
Belize Barrier Reef  off the coast of Ambergris Caye.
Belize Barrier Reef off the coast of Ambergris Caye. | Source
Close up on a course of Yellow Tail fish off the Barrier Reef near Ambergris Caye Belize.
Close up on a course of Yellow Tail fish off the Barrier Reef near Ambergris Caye Belize. | Source

2. Palau Coral Reef

If you look at atlas. In North Pacific Ocean, you can find Palau (Formally referred to as the Republic of Palau) as a small streched strip of islands surrounded by ocean. The nearest piece of land from it is Philippines, approximately 500 miles away. Each of the islands are surroended by a beautiful and largly unexplored reef system. The sytem contains a myriad of incredible marine life species.

Palau, Which also called Belau, is an attractive destination for divers. If you want to see face to face with amazing reef sharks, jellyfish, barracuda, and want to talk to nature one to one, you should not miss any oportunity to go there. The coral, found here is amongst the most beautiful and colorful in the underwater flora and fauna.

Palau Coral Reef

A markerPalau -
Palau
[get directions]

Palau Coral Reef and Rock Islands are a good source of attraction for researchers and tourists equally.

Palau Coral Reef

Click thumbnail to view full-size
Rock islands of Palau Anenomefish_on_the_wreck_of_the_Japanese_tanker_Iro,_Palau_Islands,_Micronesia Jellyfish_in_Jellyfish_Lake,_Palau_Islands,_MicronesiaStarfish on soft coral, Rock Islands, Palau Islands, MicronesiaOne of the many Rock Islands, Palau Islands, Micronesia.Closeup of soft coralChannel between the Rock Islands, Palau Islands, Micronesia
Source
Source
Rock islands of Palau
Rock islands of Palau | Source
Anenomefish_on_the_wreck_of_the_Japanese_tanker_Iro,_Palau_Islands,_Micronesia
Anenomefish_on_the_wreck_of_the_Japanese_tanker_Iro,_Palau_Islands,_Micronesia | Source
 Jellyfish_in_Jellyfish_Lake,_Palau_Islands,_Micronesia
Jellyfish_in_Jellyfish_Lake,_Palau_Islands,_Micronesia | Source
Starfish on soft coral, Rock Islands, Palau Islands, Micronesia
Starfish on soft coral, Rock Islands, Palau Islands, Micronesia | Source
One of the many Rock Islands, Palau Islands, Micronesia.
One of the many Rock Islands, Palau Islands, Micronesia. | Source
Closeup of soft coral
Closeup of soft coral | Source
Channel between the Rock Islands, Palau Islands, Micronesia
Channel between the Rock Islands, Palau Islands, Micronesia | Source

3. Great Barrier Reef

The gigantic coral reef system, lies on north east of Australia off the coast of Queensland, is world’s largest underwater ecosystem of coral reefs. It is also included one of the natural wonders of the world. This also visible from outer space and is world largest single structure made by living organisms. It is stretched over an area of about 344,000 Square kilometers over a length of 2600 kilometers. The site is rich in extraordinary underwater beauty and one of the attractive places for divers and underwater lovers. There are over 900 islands at the site and all are encircled by the reef system. The astonishing types of life and species can found on these islands in their forests and in under water system beneath them. Great Barrier Reef system has about

  • 2800 different types of reefs,
  • More than 1500 types of fishes,
  • About 4000 mollusk,
  • About 30 species of whales and dolphins,
  • 17 species of sea snake
  • 15 types 0f sea grass and much more.

With and average depth of approximately 60 meters the site is great attraction for tourists and especially for scuba divers. The best time to visit the site is in Australian Winter (i.e. summer in rest of world)

Great Barrier Reef

A markerGreat Barrier Reef australia -
Great Barrier Reef, Australia
[get directions]

Great Barrier Reef

Click thumbnail to view full-size
Aerial view of Heron Island, Great Barrier Reef Marine Park, Queensland, AustraliaGreat Barrier Reef Cruise Great Barrier Reef Australia - NASA ImageA variety of corals form an outcrop on Flynn Reef, part of Great barrier roof near Cairn, Queensland AustraliaA beautiful colorful Fish - Striped Surgeon (Acanthurus lineatus) on Flynn reef (near Cairns) Great Barrier Reef Queensland, Australia. by Toby Hudson
Aerial view of Heron Island, Great Barrier Reef Marine Park, Queensland, Australia
Aerial view of Heron Island, Great Barrier Reef Marine Park, Queensland, Australia | Source
Great Barrier Reef Cruise
Great Barrier Reef Cruise | Source
Great Barrier Reef Australia - NASA Image
Great Barrier Reef Australia - NASA Image | Source
A variety of corals form an outcrop on Flynn Reef, part of Great barrier roof near Cairn, Queensland Australia
A variety of corals form an outcrop on Flynn Reef, part of Great barrier roof near Cairn, Queensland Australia | Source
A beautiful colorful Fish - Striped Surgeon (Acanthurus lineatus) on Flynn reef (near Cairns) Great Barrier Reef Queensland, Australia. by Toby Hudson
A beautiful colorful Fish - Striped Surgeon (Acanthurus lineatus) on Flynn reef (near Cairns) Great Barrier Reef Queensland, Australia. by Toby Hudson | Source

4. Deep Sea Vents

Deep sea vents, or sometimes referred as Hydro Thermal vents, are holes in sea bed where ocean water is in direct contact with magma. There are often formed where new ocean crust is being formed as this gives sea water an opportunity to circulate through extremely hot volcanic rocks. Water around such vents often has temperature of about 700 degree Celsius and but due to extremely high pressure of water column, around 300 bars, it is still in liquid form or in a transition state between liquid and gas. The water is also very acidic and pH level here is around 2. Due very deepness and turbidity there is no chance for sun light to reach at these depths. Most of the times, water coming out from these outlets is in black color. Therefore these are also called ‘black smokers’. And here comes what is very astonishing about these vents, life exists, even in such extreme conditions around chimneys dependent on energy of and food from these vents.

According to biology books prior to discovery of these vents, it is impossible for any life cycle to survive at even one of such extreme conditions. This discovery demonstrated that life can exist and sustain in almost any condition, as it has changes our perception of life and its essentials. The marvelous eco system developed here is not dependent on sun, rather on earth’s own energy. A great variety of organisms exists in this eco-system including pogonophorans, gastropods, annelids and bivalve. The deepest hydrothermal vent, found so far, exist at the depth of 5km in Cayman Trench of Caribbean Sea.

Deep Sea Vents

5. Galápagos Islands

Galapagos Islands are archipelago consisting of five major, eight small islands and about 41 islets. Legally it is a province of Ecuador, but lies about 900 km away from its mainland in the Pacific Ocean. The combined area of this archipelago is about 8000 square kilometers. Galapagos is habitat of some of amazing forms of life. It has some unique species of animals mostly reptiles like sea lion, galapagos (big tortoise) and local penguins. The reason for it to host such unique and endemic species is perhaps its natural isolation due to which it remained out of reach from predators and also human interference was not there till for a long time.

Some of amazing species of birds found here include albatrosses, , frigate birds, flamingos and blue-footed boobies. The islands also host a wonderful great variety of endemic plants including bromelias, Scalesia, tree ferns, lava flows and orchids. The Archipelago has some rare species of cotton, tomato, pepper, guava and passion flowers. The underwater life in Galapagos is also very attractive. The islands has many endemic fish species and marine plants. It is therefore, Galapagos Islands are considered one of the Underwater Wonders of the planet.

Galápagos Islands

A markerGalapagos Islands -
Galapagos Islands, Ecuador
[get directions]

Galápagos Islands

Click thumbnail to view full-size
Galapagos Islands - Puerto Baquerizo Moreno, Galapagos, ECGalapagos Islands - Puerto Baquerizo Moreno, GalapagosGalapagos Penguins (Spheniscus mendiculus) at Isabela, Galapagos IslandsRough texture Santa Cruz, GalapagosSanta Cruz, Galapagos, ECUnder water scene of Galapagos Islands - Puerto Baquerizo Moreno, Galapagos, ECwaved albatross Espanola Punta Suarez found on Galapagos Islands
Galapagos Islands - Puerto Baquerizo Moreno, Galapagos, EC
Galapagos Islands - Puerto Baquerizo Moreno, Galapagos, EC | Source
Source
Galapagos Islands - Puerto Baquerizo Moreno, Galapagos
Galapagos Islands - Puerto Baquerizo Moreno, Galapagos | Source
Galapagos Penguins (Spheniscus mendiculus) at Isabela, Galapagos Islands
Galapagos Penguins (Spheniscus mendiculus) at Isabela, Galapagos Islands | Source
Rough texture Santa Cruz, Galapagos
Rough texture Santa Cruz, Galapagos | Source
Santa Cruz, Galapagos, EC
Santa Cruz, Galapagos, EC | Source
Under water scene of Galapagos Islands - Puerto Baquerizo Moreno, Galapagos, EC
Under water scene of Galapagos Islands - Puerto Baquerizo Moreno, Galapagos, EC | Source
waved albatross Espanola Punta Suarez found on Galapagos Islands
waved albatross Espanola Punta Suarez found on Galapagos Islands | Source

6. Lake Baikal

The crescent shaped Lake Baikal is considered biggest unfrozen water body in the world. It is located in south of Russia in the Siberian region. It is estimated the lake contains 20% world’s unfrozen surface fresh water. The average depth of lake is about 1632m, and due to this reason, it is the deepest lake in the world. The surface are of the lake is 31, 722 square kilometers. Considers this area and its depth it is more like a sea instead of lake. Even in old literatures when the extents of the lake were unknown, it was written as Baikal Sea instead of Lake Baikal. It hosts 1700 species of plants and animals, and about 65 % of them are not found somewhere else.

Some interesting facts about Lake Baikal includes

  • The lake contains 23,000 cubic km. of fresh water and its size is still expanding.
  • It is estimated that Lake Baikal was formed some 25 millions ago, considering this also oldest fresh water body on the earth.
  • It is home to many unique species of animals and plants including the freshwater seal.
  • The water is so clear the one can see anything up to 40 m depth easily.
  • The rough dimensions of f Lake Baikal are: Length 636 km, Width 79 km.
  • There are 27 islands in Lake Baikal, most of them being uninhabited.
  • The coastline of Lake Baikal is 2100 km.
  • There are about 300 streams and rivers flow into Lake Baikal, but there is just one outlet, the river Angara.
  • Some of Baikal's fish can survive more than one mile beneath the surface, despite the incredible water pressure at that depth. But these fishes are so adapted to this pressure that literally explode is brought to surface due to huge pressure difference.


Lake Baikal

A markerLake Baikal -
Lake Baikal, Russia
[get directions]

Lake Baikal

Click thumbnail to view full-size
Lake Baikal from Satellite OrbView-2 (Image by NASA providedLake Baikal (South) in Summer as its view at at Bolshoi KotyMountains at Eastern shore of Lake Baikal, Svyatoy Nos Island (Holly Nose, top elevation 1877 m) Olkhon Island, Shaman Rock near Khuzhir Omul fish, endemic to Lake Baikal (Russia). Smoked and on sale at Listyanka market.A beautiful view of Lake BaikalLake Baikal In WinterSunset on Lake Baikal at Maksimikha, Buryatiya
Lake Baikal from Satellite OrbView-2 (Image by NASA provided
Lake Baikal from Satellite OrbView-2 (Image by NASA provided | Source
Lake Baikal (South) in Summer as its view at at Bolshoi Koty
Lake Baikal (South) in Summer as its view at at Bolshoi Koty | Source
Mountains at Eastern shore of Lake Baikal, Svyatoy Nos Island (Holly Nose, top elevation 1877 m)
Mountains at Eastern shore of Lake Baikal, Svyatoy Nos Island (Holly Nose, top elevation 1877 m) | Source
Olkhon Island, Shaman Rock near Khuzhir
Olkhon Island, Shaman Rock near Khuzhir | Source
Omul fish, endemic to Lake Baikal (Russia). Smoked and on sale at Listyanka market.
Omul fish, endemic to Lake Baikal (Russia). Smoked and on sale at Listyanka market. | Source
A beautiful view of Lake Baikal
A beautiful view of Lake Baikal | Source
Lake Baikal In Winter
Lake Baikal In Winter | Source
Sunset on Lake Baikal at Maksimikha, Buryatiya
Sunset on Lake Baikal at Maksimikha, Buryatiya | Source

7. The Northern Red Sea

Northern Red Sea, a water body between Asia and Africa is surrounded by Egypt, Eritrea, Jordan, Israel and Saudi Arabia. It has an average depth of 490m. The sea also has a diverse ecosystem having more than 1200 fish species including 44 types of Sharks and 42 deep-water fishes. The Northern red sea is also habitate of about 200 different hard or soft corals and 1000 invertebrate species.

From tourism point of view, it is considered as one of best places for scuba divers. Sometimes it is also called as Under Water Garden of Eden. Most of the species found in Red Sea are harmless for human but still there are very few dangerous ones also. So information must be sought before any scuba diving mission.

The Northern Red Sea

The Northern Red Sea

Click thumbnail to view full-size
Northern Red Sea - Red Coral  with a view at Fanous East Reef, Red Sea, EgyptNorthern Red Sea - Red gorgonian at Little Brother, Red SeaNorthern Red Sea  - Coral, Sharks Bay, Egypt Northern Red Sea - Red at Fanous East Reef, Red Sea, EgyptNorthern Red Sea -  Bannerfish, Heniochus intermedius at Abu Dabab Reefs, Red Sea, EgyptNorthern Red Sea coral and marine fish (Anthia_goldfish) Red Sea CoralNorthern Red Sea - Coral, Sharks Bay, Egypt Northern Red Sea - Red Sea Goatfish, Parupeneus forsskali feeding on sandy bottom at Abu Dabab Reefs, Red Sea, Egypt Northern Read Sea - goldies around coral at Little Brother, Red Sea, Egypt
Northern Red Sea - Red Coral  with a view at Fanous East Reef, Red Sea, Egypt
Northern Red Sea - Red Coral with a view at Fanous East Reef, Red Sea, Egypt | Source
Northern Red Sea - Red gorgonian at Little Brother, Red Sea
Northern Red Sea - Red gorgonian at Little Brother, Red Sea | Source
Northern Red Sea  - Coral, Sharks Bay, Egypt
Northern Red Sea - Coral, Sharks Bay, Egypt | Source
Northern Red Sea - Red at Fanous East Reef, Red Sea, Egypt
Northern Red Sea - Red at Fanous East Reef, Red Sea, Egypt | Source
Northern Red Sea -  Bannerfish, Heniochus intermedius at Abu Dabab Reefs, Red Sea, Egypt
Northern Red Sea - Bannerfish, Heniochus intermedius at Abu Dabab Reefs, Red Sea, Egypt | Source
Northern Red Sea coral and marine fish (Anthia_goldfish)
Northern Red Sea coral and marine fish (Anthia_goldfish) | Source
Red Sea Coral
Red Sea Coral | Source
Northern Red Sea - Coral, Sharks Bay, Egypt
Northern Red Sea - Coral, Sharks Bay, Egypt | Source
Northern Red Sea - Red Sea Goatfish, Parupeneus forsskali feeding on sandy bottom at Abu Dabab Reefs, Red Sea, Egypt
Northern Red Sea - Red Sea Goatfish, Parupeneus forsskali feeding on sandy bottom at Abu Dabab Reefs, Red Sea, Egypt | Source
Northern Read Sea - goldies around coral at Little Brother, Red Sea, Egypt
Northern Read Sea - goldies around coral at Little Brother, Red Sea, Egypt | Source

More by this Author


Comments 4 comments

billybuc profile image

billybuc 4 years ago from Olympia, WA

Super interesting hub with great photos. Well done my friend!


teacherjoe52 profile image

teacherjoe52 4 years ago

Hi ahmed.

A great atricle. Have you ever been to that place on the Baja in Mexico where twice a day a hundered or more hammerhead sharks congergate? They are very docile.


mckbirdbks profile image

mckbirdbks 4 years ago from Emerald Wells, Just off the crossroads,Texas

You did a fantastic job reporting these natural wonders. The photograph is great. The videos fit perfectly. Stirs up the wonderlust.


ahmed.b profile image

ahmed.b 4 years ago from Sweden Author

@billybuc: Thank you for expressing your opinion

@teacherjoe52: Thanx and I love underwater adventures but so far I have not been able to fulfil my "love" :) may sometime in life I will be able to get enough time and money together to do that.So far I am what I can do is only view movies and collect information about and share. Good Luck by the way.

@ mcbirdbks: I am grateful that you liked all arrangements and the article as a whole as well. I took me about 10 days from perceiving idea to what you have seen. Thank you for stopping by and enjoying.

Have good day all of you.

    Sign in or sign up and post using a HubPages Network account.

    0 of 8192 characters used
    Post Comment

    No HTML is allowed in comments, but URLs will be hyperlinked. Comments are not for promoting your articles or other sites.


    Click to Rate This Article
    working