Secrets Of The Oceans!
Why Do Fish Have Slim Tapering Bodies?
Coral reefs are made by tiny creatures called polyps that lives in colonies mainly in tropical sea water. Polyps are shaped like small sea anemones, but have a hard, chalky cup-shaped shell to protect their bodies. When they die, the shells remain and new polyps grows on top of them. Overtime billions of shells build up to form a coral reef. On corals there are what is known as Dead man's fingers, and dead man's fingers are a species of softy coral that grows on rocks. Each coral colony is made up of thousands of polyps that forms a fleshy mass that looks like a rubbery hand. When pieces of rubbery hand washes up on a sea-shore. It is quite possible that it can give swimmers a big fright to see something that resembles a dead man's hand or finger.
Great Barrier Reef
One of the biggest coral reef is known as the Great Barrier Reef off the north-east coast of Australia. The Great Barrier Reef is the world's largest coral stretching for 1,200 miles. It is the largest structure made by living creatures. The Great Barrier Reef is the home several colourful and spectacular sea animals, including more than 1,500 different kinds of fish. One of the biggest danger to coral reefs is the Crown-of-Thorns starfish. Crown-of-thorns is a coral reef killer. The crown-of-thorns starfish fastens itself to the living coral, sticks its stomach out, and releases juices that digest the polyps. When only the coral shells are left, the crown-of-thorns starfish moves on to another area of the colony. This creature can kill a large patch of coral in one day. Crown-of-thorns starfish has destroyed massive areas of the Great Barrier Reef.
Mysteries of Deep Sea Fish
Even today in the 21st century scientist know very little about deep-sea fish. This is due to the fact they often experience difficulties descending to the bottom of the ocean. Most deep-sea fish will not survive in the atmosphere of the surface if they are brought up from the depths of the sea. Some will even explode, because their bodies are so built that they are only able to withstand the great pressure of the ocean depths. More than a century ago scientist believed that life could not exist in the very deep oceans. Now they know that creatures do survive in the dark depths of the oceans, but conditions are extremely harsh. At 3,330 (1000m) below the sunlit surface, the water is pitch-black and ice cold. All deep-sea fish must be able to withstand the great pressure caused by the weight of the water on top of them, which would kill all surface creatures. Many deep-sea fish look like monsters just as if they were out of some horror movie, with very large heads, extra large mouths, fierce looking teeth and long thin bodies. Yet, on the contrary, these deep-sea horror creatures are quite small, less than 1 foot long.
Viperfish, Gulper Eel and Black Swallower
In the black depths of the sea many deep-sea fish sense their prey by smell, taste and touch. A line of nerve running down the fish's body picks up the vibration in the water caused by other creatures swimming. Some of the deep-sea hunter fish have long touch and taste sensitive tentacles trailing from their jaws. Some fish such as the gulper eel never gets hungry. In the depths of the sea there are no water plants and very few creatures lives down there, therefore, food are very scarce in the dark depths of the ocean, so fishes' meal are few and far between. Fish such as the Gulper eel and the Viperfish have very large stretchy stomachs that can expand to fit any victim. Another deep-sea fish known as the Black Swallower, can swallow and digest a fish twice its size.
Captain Ahab and Moby Dick
Herman Melville writer of the classic Moby Dick novel, tells the story of Captain Ahab and his hunt for the great white sperm whale that tore off his leg. In his ship, the Pequod, Captain Ahab and his crew of sailors set sail all round the world in search of the great white sperm whale Moby Dick the whale that tore off his leg. When Captain Ahab and his crew finally caught up with Moby Dick, they struggled for days to catch him. Captain Ahab finally harpooned Moby Dick, the great white monster just as he sunk the ship, and the unfortunate Captain Ahab is dragged down to a watery grave.
Few fish look after their Babies, but fish known as mouthbrooders are an exception to the rule. Mouthbrooders such as the Sea Catfish, protects their young by hiding them in their mouths! In the world of sea catfish, the males are the caring parent. The sea catfish babies swim in a cloud near their father's head. Sea catfish babies swim close to their father's mouth so that they can scoot inside his mouth when danger threatens.
Dinosaurs of The Oceans
Blue Whales are the giants of the oceans. The Blue Whale is the largest animal ever to have lived on planet Earth. It is four times the size of the biggest dinosaur. The adult Blue Whale can measure up to 100 feet long, and weigh 200 tonnes, which is as much as 60 Elephants. The female species of the Blue Whale are even bigger than the male species.