Most marine animals form their shells from calcium carbonate, which is a tough mineral also found in limestone. Some sponges ...

A sea turtle’s shell is living bone fused directly to its spine and ribs. It is not a detachable shield or an external case, ...

Seashells are abundant along coastlines, originating from mollusks that construct exoskeletons for protection. Comprised mainly of calcium carbonate, these shells possess enduring qualities that make ...

When sea otters hammer mussel shells against rocks to help open them, they're leaving behind their own archaeological record that can't be compared to any other creature, according to a new study. Sea ...

Grist is a nonprofit, independent media organization dedicated to telling stories of climate solutions and a just future. A new study found trace amounts of nuclear waste in sea turtles in the ...

From shallow reefs to pitch-black depths, the ocean is alive with sparkling lights. Fish, squid, clams and plankton have found a wide range of ways to glow, shimmer and flash, lighting up the dark ...

Sea Otter Awareness Week is celebrated annually from September 21 to September 27 to highlight not only why the keystone marine mammal needs to continue to be protected, but also the threats the ...

Scientists found a tiny sea animal with a translucent shell under rocks in Japan and discovered a new species, a study said. Photo from Hiroshi Fukuda On a sandy coastline of Japan, a small and ...