Dolphins are one of the most beautiful groups of aquatic mammals. Most
dolphin species live in the sea water and can be found in all oceans of
the world, and just few species live in the fresh water of Asia and
South America. Number of dolphins decreased greatly due to commercial
fishing, accidental catch (together with other fish) and because their
normal source of food is seriously reduced as a consequence of the
global warming. Several dolphin species can become extinct in the near
Octopuses are one of the most interesting sea creatures. Name octopus is derived from a Greek language and it means eight-footed. There are over 200 species of octopuses and all of them live in oceans around the world, usually near the coral reefs. Octopuses are invertebrates, which mean that they are boneless. Because of that, octopus loses its shape when it is pulled out of the water.
Clownfish is a small marine fish which gained worldwide popularity after
appearing in the animated movie "Finding Nemo". There are 28 different
species of clownfish that inhabit Indian and Pacific oceans, Red Sea and
Australian Great Barrier Reef. Clownfish lives in the warm water, near
the coral reefs. Biggest threats to the survival of clownfish are
pollution of the ocean, overfishing and destruction of their habitat.
Luckily, population of clownfish in the wild is still large and stable.
These animals are not on the list of endangered species.