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An analysis of shark-tooth weapons from the 19th century reveals that two shark species, the spot-tail and dusky, were once common in the Gilbert Island reefs in the Central Pacific. The sharks are no longer found in the area.

Biologists have documented two-headed animals before, like snakes and lizards — but a finding like this is extremely rare. It's a two-headed bull shark, and it was discovered by a Florida fisherman after cutting open the uterus of an adult shark.

Marine biologist Ryan Kempster noticed a very strange thing when he brought an electrical field close to the egg case of an embryonic shark: The unborn — and highly vulnerable — baby altered its movements by ceasing its gill function. It's a strategy, he believes, that helps baby sharks to sense when a predator is…

The Asylum, the group who brought you amazing films like Mega Shark and Mega Piranha, is back with a movie ripped right from viral hoax headlines after Frankenstorm. A tornado in Los Angeles brings sharks into the city! Because … yeah!

Even when you're on dry land, you may not be completely safe from sharks. Golfers at San Juan Hills Golf Club in San Juan Capistrano, Calif., got a bit of a shock this past Monday when a two-foot-long leopard shark dropped from the sky onto the 12th hole. So how did this sea creature find itself five miles from the…

Sometimes familiar Hollywood characters make the jump to Indian cinema — and occasionally they do so with a special effects budget that apparently consisted solely of old pistachio shells.

We've seen some gee-whiz diving videos from underwater videographer Sarosh Jacob, but none quite like this. Here, he braves a feeding frenzy of over one-hundred silky sharks feeding on a school krill off of Mexico's Socorro Islands. What fun!

Syfy offered us the epic battle of Mega Shark vs. Giant Octopus, but National Geographic gives us the real world battle of not-so-mega shark (a spiny dogfish, specifically) vs. regular-sized octopus. When this dogfish gets hungry, it thinks it will make a meal of the octopus in its aquarium tank. But it won't be so …

Cape Cod, Massachusetts tends to attract a lot of vacationing New Englanders during the summer months, but its seal populations are known to attract a toothier class of visitor: great white sharks.