Question

give the characteristics of marine animals

Answer 1

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Life in water. Marine mammals all have certain characteristics that make them similar to each other and different to other marine animals such as fish. The most significant is the fact that they breathe air rather than water, and so, they must return to the water's surface every so often to breathe.

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Answer 2

Throughout the oceans, marine organisms must deal with several things that are less of a problem for life on land:

1.Regulating salt intake.
2.Obtaining oxygen.
3.Adapting to water pressure.
4. Dealing with wind, waves and changing temperatures.
5.Getting enough light.