Scientists have identified a previously unknown species of chiton, a small, armored marine mollusk, living along South Korea’s coasts. The finding shows that even one of Earth’s most ancient animal ...

Sea mollusc shells are patterned not through conscious control, but by chemistry acting at the shell’s growing edge. A thin strip of tissue known as the mantle secretes both the shell material and its ...

Modern Nautilus and Allonautilus species inhabit deeper waters than their extinct ancestors did over 500 million years ago.

A shell is a hard, rigid outer layer, which has evolved in a very wide variety of different animals, including mollusks, sea urchins, crustaceans, turtles and tortoises, armadillos, etc. Scientific ...