Question

Fish most commonly live ________. in the upper part of the oceans in the thermoclines far from islands and continents near islands and continents in the deepest parts of the ocean

Answer 1

The right answer is in the upper part of the oceans

The majority of ocean fish swim at the surface because this is where there is the highest level of dissolved oxygen, and this is where the temperature is most suitable for their survival.

There are, of course, some fish living in the depths of the oceans.