Which is the largest ocean on Earth?

Which sea creature is known for having eight arms?

What allows fish to breathe underwater?

What is coral made up of?

Which sea creature has a hard shell and walks sideways?

What type of water do oceans have?

Which ocean is closest to the North Pole?

What is the fastest fish in the ocean?

What part of a whale helps it come up for air?

Which of the following sea creatures is a mammal?