A scary-looking creature with “devil” in its name was spotted close to the surface off Tenerife, a Spanish island.

Moon jellies, which are found in shallow bays around the world, look like small ... waving colorful tentacles, they lure fish, sting them, and eat them. Many of the creatures lumped together ...

The scariest part? As big as great whites are, they aren't the largest. It's tough to definitively rank the biggest fish in ...

From the fearsome piranha and vampire fish to the mighty anaconda, the crocodile, and the candiru, these are among the most terrifying reptiles, insects, spiders, and fish.

It is easy to believe that the black seadevil anglerfish, with its gaping maw of razor-like teeth, a bioluminescent rod ...

Marine Wildlife Photographer David Jara Boguñá posted a video of the sighting saying, “This could be the first recorded sighting in the world of a black demon or adult abyssal (Melanocetus johnsonii) ...