Three-quarters of the earth is covered in water, which is pretty remarkable when you consider seven billion humans live on our planet.

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In addition to all of the humans, there are also around seven million species of land animals which means the world is full of living, breathing organisms on just 25-percent of it.

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What about the other 75-percent?

Scientists believe there are around 2.2 million species of creatures living in the earth’s waters.

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Out of these two-plus million species, there are some really, really strange ones.

Scientists discovered a prehistoric shark that they have determined has existed for 80 million years.

Head to the next page to check this thing out!