In the chilly waters off the Northern California coast, palm-size sea creatures known as Velella velella float along the ocean’s choppy surface. But springtime storms can push the jellyfish-like ...

One that caught attention from many was a type of sea mollusk that washed ashore on South Padre Island in late May.

What are the blue blobs washing up on California beaches? What to know about these strange sea creatures. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

Beachgoers on a popular stretch of U.S. coastline have been stopping in their tracks at the sight of translucent, blue and white blobs scattered along the high-tide line. The creatures look almost ...

A newly discovered predatory “death-ball” sponge in the Southern Ocean hunts small prey with tiny hooks, revealing surprising deep-sea behaviour and hidden marine biodiversity.

A deep-sea fish species with unusual cheek patterns has been discovered in the South China Sea after it was listed on online seafood markets. The fish has been named Branchiostegus sanae because its ...

Portuguese man-of-war are washing up on North Carolina beaches, forcing officials to issue a warning to beachgoers along a 150-mile stretch of sand from Cape Lookout to the South Carolina state line.

The orange-clubbed sea slug is "a small colourful sea slug that can be found grazing on sea mats on the rocky shore. They are ...

The anemone is part of a new species, genus and family, according to the study. Photo by Yanghong Yu via Unsplash A “strange” creature recorded in the deep waters off the coast of Japan represents an ...

The vast array of organisms in the deep sea remains a mystery to humans. Now, marine biologists can add one more puzzle to the list. A collection of odd materials was discovered nearly four miles ...