Dry Tortugas is a unique national park because 99% of its area is underwater. The waters surrounding it are home to some dangerous creatures to look out for.

A longtime surfer and marine wildlife advocate was "left shaken" to his core after a relentless and horrifying encounter with ...

Box jellyfish is one of the world’s deadliest animals in the ocean thanks to a venom containing toxins that strike at the heart, nervous system and even skin cells of anyone unlucky enough to touch ...

A snorkeler in Egypt's Red Sea had a near escape after encountering one of the most venomous animals on earth.

This elusive predator, known for its “dangerous” bite, was found during wildlife surveys ... Published Feb. 27 | Read More | Orange deep-sea creature — with ‘dense’ eyelashes — discovered as new ...

An unusual sea creature washed up on a Miami beach ... and yes they are real they can be silver or blue and they are dangerous because of the venom but they don't really sting humans." ...

They can kill birds, fish and other sea creatures and lead to health problems in humans, including shortness of breath and even death. Blooms can force health authorities to close beaches.

Invasive sea creatures are turning up along the Jersey ... Unless you’re climbing around in the rocks, which can be very dangerous, experts say these creatures will likely have no impact on ...

This elusive predator, known for its “dangerous” bite ... Scientists found an orange deep-sea creature with “dense” eyelashes off Costa Rica and discovered a new species, a study said.