Gentle giant of the sea From in the air to underwater, another video emerged that is a first glimpse of the giant smalleye stingray, the largest of its species and only seen alive off the coast of Mozambique. The cartilaginous fish are actually related to sharks. The one seen on the video, measuring about eight feet across, looks like a very slow-moving aqua--fish-spaceship, with fins jutting out from a hard shell ending in a long, pointy stinger that, trust us, you don't want to get anywhere near. (They say the thing is only used in self-defense, but who wants to test that theory?) From the safe distance of a video screen, it sure does look cool.