Sea butterflies flit through the ocean on gossamer wings, each species with a style of its own. These tiny marine snails, or thecosomes, migrate up to surface waters at night to feed and sink to ...
Most of us have picked up a shell or two that caught our eye while strolling the beach, and many of us might even have a ...
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, ...