14. Basking shark
On the opposite side of the mouth scale from the cookie cutter shark is this big guy: the basking shark (Cetorhinus maximus). Growing up to 40 feet long (12.2 meters), the shark feeds by gaping its mouth and filtering water as it swims, picking up zooplankton. I personally love that some of nature’s biggest things feed on little things, but the basking shark has stiff competition up this list.
