Wonder Woman and the Amazons actually have a pack of pet Megalodons that have the duty to devour those who try to invade Themiscyra.
...Well, had, anyway. In the last issue, WW #33, the Megalodons heroically sacrificed themselves to fight against a Kraken and other giant sea monster that were attacking the Amazons.
I never thought a bunch of enormous and ferocious sharks could be turned into woobies, but their heroic death is actually quite moving.