In this video, a spear fisher on a diver catches sight of a small shark with a big problem—w plastic line wrapped around its body and cutting into its gills. Related: Labrador Retriever's ...

Do you think a coelacanth is more closely related to a bull shark or a moray eel? Explain your reasoning. Gills: Allow a fish to breathe. Some fishes have gills covered by flaps. When a fish opens ...