The oceans of the world are so vast that humans have only begun to explore the depths. In fact, many marine scientists believe that there are thousands, if not millions, of currently unknown sea creatures waiting to be discovered. But what about the ones we know of? They are a remarkable and diverse array of animals - some are curiously similar to land dwellers and others couldn't be more different. How much do you think you know about marine creatures? Now is the time to answer the question.
Do you know the male marine animal who gives birth? Or how large the heart of a blue whale is? Hint: it can carry you and three of your best friends inside. Do you know what a group of jellyfish is called? If you don't, you will smack yourself when you find out.
Dolphins are one of the most beloved sea creatures and have uniquely come to the rescue of humans time and again, perhaps because they are excellent at hearing sounds of distress. Do you know how far they can hear while swimming?
Sea creatures big and small are some of the most fantastic creatures in the world, but how much do you think you know about them? This quiz will probably tell you - not enough. Take this quiz to find out if you will sink or swim.
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