In this shocking fish autopsy, a jellyfish catfish is discovered to have swallowed a jelly catfish whole offering a rare and unexpected glimpse into aquatic predation. The video reveals the anatomy, ...

Researchers witness gigantic iceberg A-84 breaking away from George VI, revealing an unknown ecosystem and giant phantom ...

Millions of years ago, jellyfish were trapped in this lake after a submerged reef rose from the sea, creating a landlocked saltwater lake. In this lake, the jellyfish have adapted to the new ...

Mucus from jellyfish that sit upside-down on the seafloor has blobs lined with stinging cells The stinging cells are coated on tiny mobile blobs called cassiosomes within the mucus that “zoom ...

Portuguese man o' war, often mistaken for jellyfish, have been sighted on Florida beaches. While rarely fatal to humans, the sting can be intense and should be treated with hot compresses ...

Jellyfish are known for drifting to and fro at the whim of ocean currents—but not all species are so passive. The millions of golden jellyfish that pack Palau’s Jellyfish Lake spend much of ...

Called velella velella or by-the-wind sailors, the jellyfish-like creatures typically are far offshore. But winds blew heaps onshore this spring. It is not a true jellyfish but a close relative ...