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The common dolphin is a somewhat popular animal. There are very intelligent and sociable. There are reports of them rescuing injured companions and they are often seen swimming along the bow of a ship. Common dolphins are 2.1 to 2.6 m (7 to 8 1/2 ft) long. They feed on fish and squid and certainly make good use of echolocation when hunting.
	The california sea lion is an attractive species. They adapt well to training and is the most commonly seen species seen in circuses and marine shows. The live on the Pacific coast. Their diet consist of fish, octopus, and squid. There are 1.7 to 2.2 m (5.5 to 7.25 ft) long.
Eagle rays are large, graceful fishes, with pointed, wing like pectoral fins and long thin tails. They are 1.8 m (6 ft). They live on the eastern part of the Atlantic Ocean and in the Mediterranean and Adriatic Seas. They feed on crustaceans and mollusks. The females produce up to seven young at once!
	The killer whale is an extremely popular species of whale. Killer whales do not kill humans. However, they have been known to attack baleen whales and leave without eating them. Killer whales are about 9.4 m (31 ft) long. They live in the Atlantic, the Gulf of Mexico, and parts of the pacific. The feed on fish, squid, sea turtles, and sea birds.
This next organism is very unusual. It is called plankton. Plankton is a collective term that includes a variety of marine organisms. It is not a specific type of life. Plankton can be made up of both very small plants and very small animals. There are phytoplankton and zooplankton. Phytoplankton is made up of different kinds of plant life including golden alae, green algae, and blue-green algae. Zooplankton is made up of animals such as very small crustaceans, jellyfish, worms, and mollusks. All of which are very small. Their movement depends largely on tides, currents, and winds. This is because they are too small or weak to go against the current. So, even though there very small they are a very large part of the food chain in the ocean.
	The lined seahorse is very popular in cartoons. It is 13 cm (5 in.) long. They live in and around the Bermuda and the Gulf of Mexico. They eat by sucking in water very quickly. These little creatures are poor swimmers and depend on their camouflage to hide from their enemies.

To conclude this page we will give you general information to help illustrate how amazing these organisms are.

We suspect that all of these animals have evolved over time. The hammerhead shark's bizarre shape is proof of this. These animals are truly amazing. Some sharks even have hundreds of tiny holes in their faces called ampullae of Lorenzini. This picks up on electrical impulses given off by organisms as they move. Also, sharks of lateral line organs that sense movements of water caused by organisms swimming near by; and two thirds of sharks brain is devoted to smell. We are sure that the bottlenose dolphin is like it is due to evolution as well. The lined seahorse is camouflaged to hide from its enemies.

All of these adaptations shows how amazing the ocean's fauna really is. They have changed for the better over the
years. That is what evolving is, changing for the better.

 

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Deep sea shrimps are usually reddish coloured. Since many deep sea fish are colour blind and this colour is difficult to be detected in the deep, deep sea shrimps are well camouflaged.

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