A blue whale is an example of which of the following?

nekton

zooplankton

benthos

phytoplankton

Nekton are living organisms that swim through the water, and they may live at any depth. Benthos are living things that mostly stay on the ocean floor. Plankton do not move by themselves, they rely on the motion in the water to carry them along.

Whales do not typically stay on the ocean floor because they must go to the surface to get oxygen. The best answer is A. Nekton

The answer is nekton. the octopus, whales, eels and squid are all examples of nekton.