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.

"Almost impossible to penetrate the fish's skin with these covering it ... thought just freshwater," wrote one person. "That is scary looking" read another comment. "I have seen the gar ...

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) ...