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  PARTICIPATING SCHOOLS
1
 Point Option High School
 Virginia. USA
2
 C S Ramachary Memorial   Matriculation School
 Madurai, India
3
 Wako Kokusai High School
 Wako. Japan
 
 
 
 
MARINE ANIMALS
Introduction    Ponds & River    Tropical Water    Seas & Oceans    Conclusion
Introduction

Water is vital for all living things. Water gets collected in rivers, ponds, lakes and in oceans and seas. The water animals adapt themselves to the water area they live in.

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Ponds and Rivers

The still water of a pool and the running water of a river each have their own special group of creatures. By no means, the same kinds inhabit each part of a pool or river.

In ponds, during spring, newts, frogs and toads take to the water to lay eggs. Frog and toad tadpoles browse on soft vegetation. Newt larvae feed on worms and water fleas. Newt and frog tadpoles may fall prey to big beetles that dive and hunt under water. The shallow waters at the pool edge are popular with many birds. Mallard ducks, coots, herons, kingfishers, sticklebacks are some of them. In deeper water, large fishes, tench and bream, rudd and roach, pike and perch hunt for smaller fishes and plants near the bottom.

Between its source and the sea, a river may hold five kinds of habitats. First comes the narrow head stream. Here lives the small flattened crawling creatures. Next is the troutbeck in which lives the small aquatic insect larvae and dippers, a type of bird. In the minnow reach lives the caddis fly, dragonfly, nymphs, freshwater shrimps and cray fishes. The river next enters lowland reach. Here, worms, insects, mollusks and crustaceans are found in abundance. When the river meets the sea, ducks, geese, wading birds and gulls are found.

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Tropical waters

Tropical waters teem with insects, fishes and other forms of life. Here there is no winter cold to kill or check their growth. There is year round food supply and warmth for the animals. They are homes for strange fishes and amphibians.

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Seas and oceans

Most marine animals live in the upper sunlit layers of the sea. The small drifting algae provide nourishment for small fishes that larger fishes eat.

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Conclusion

Deep in the sea, live Mackerel and herring which are plankton eaters. Sharks and rays have skeletons made of cartilage instead of bones. Sharks are harmless monsters and streamlined hunters which rely on smell to find their prey. Whales are giant sea animals that hunt largely among the upper levels of the ocean. The biggest animals on earth are the blue whales. They eat small shrimp-like animals known as krill. True deep-sea fishes seldom reach the fishmongers slab. Though they are centimeters long, they have enormous jaws and stomachs to make the most of those few large meals that chance to come their way. Many produce their own light.

Thus water animals adapt themselves to the area where they live in. Other animals require water for their survival but these animals survive in the water itself.

 
Research: Yazhini & Deepa, CSR
 
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