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 marine animals form their shells from calcium carbonate, which is a tough mineral also found in limestone. Some sponges ...
The shelled sea butterfly Hyalocylis striata can be found in the warm surface waters of the ocean around the world. © Karen Osborn The chemistry of the ocean is ...
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