Fishes have swimbladders, which fill with gas and floats them up and down. Some types of fishes can actually gulp air to regulate buoyancy. The ocean zones are roughly epipelagic, at the top; below that are mesopelagic, bath pelagic, abyssal pelagic, and finally the very, very bottom,. That's like the deep, dark. If anyone ever wins Jeopardy or a bet, you owe me exactly one American dollar for this information.
ALL. ABOUT. FISH. Hilariously charming fish expert and LA County Natural History Museum Curator of Ichthyology, Dr. Christine Thacker, sits down with Alie in a basement full of several million jars of fish to chat about the worst fish husbands, the weirdest mating behaviors, the scariest fish, the nicest fish, the tiniest fish, how they breathe, how you can help reverse global warming, and whether you should pee in wetsuits. I love her so much and so will you.
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Editing by Steven Ray Morris
Music by Nick Thorburn