When scientists on board the research vessel (RV) Investigator pulled a large sponge from the ocean in 2017, they noticed a tail fin poking out. They expected to find an eel had wriggled into the sponge. Instead, they discovered 30 catsharks hiding inside.
Sharks may have been perceived as one of the most terrifying aquatic animals, as suggested by many thrillers we see on television. Here are 5 of the world's largest sharks venturing in or around the border of the deep sea.