In this post I will talk about the 4 most common sea creatures the shark, dolphin, whale and killer whale
Shark:
There are about 350 species of sharks living in the ocean. A few species, such as the bull shark, swim into estuaries and up rivers. Sharks are cartilaginous fish that range in size from the pygmy shark, which is 25cm long, to the 12m whale shark. they are superb hunters and track their prey by sight, smell, and by detecting the electricity produce by moving fish. Only a few sharks are known to attack humans, but all should be treat with caution and respect.
Shark:
There are about 350 species of sharks living in the ocean. A few species, such as the bull shark, swim into estuaries and up rivers. Sharks are cartilaginous fish that range in size from the pygmy shark, which is 25cm long, to the 12m whale shark. they are superb hunters and track their prey by sight, smell, and by detecting the electricity produce by moving fish. Only a few sharks are known to attack humans, but all should be treat with caution and respect.
Dolphins:
dolphins are aquatic mammals that spend their lives in the water, coming to the surface to breathe. They are the most abundant and diverse member of the whale family. Dolphins have beak-like snouts and sharp, conical teeth and are ocean dwellers, although some live in fresh water. Porpoises are smaller than most dolphins and generally live in coastal water, rather than out in the open sea.
Whale:
Whale are the largest creature on Earth. The biggest of all, blue whale, can weigh up to 120 tonnes. Whale are marine mammals. they can be divide into two groups:baleen shale, such as the humpback shale, and tooth whales, a group that includes dolphins and porpoises. Some whales hunt large animals but many eat tiny fish or shrimp-like crustaceans called krill.
Killer whale:
killer whales are the largest member of the dolphin family. highly social and intelligent, they live in groups called pods. Killer whale communicate using a range of underwater calls, and with social signals such as flipper slapping or acrobatic leaps.
