A whale is not a fish

Whales are perfectly adapted to life in the water and you could almost mistake them for fish. Even though they're not related to them at all.

So what is the difference between a whale or a dolphin and a fish? Are the differences really that big? Find out in our little quiz.

Dolphin or fish?

Dolphin or shark?

So now you know the main differences between whales and fish. But could you also tell from the dorsal fin whether a dolphin or shark swims in the water? Give it a try!