There are 34,000 different species of fish. That’s more than all the other vertebrates (amphibians, birds, reptiles, and mammals) combined.

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Do Sharks Really Die if They Stop Swimming?

It’s a widespread belief: If sharks stop swimming, they die. But is that actually true? Let’s find out. If you look at the nurse shark and the tiger shark, this belief is already proven false: these, and a few other shark species, can stop swimming whenever they want. They breathe by way of buccal