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Invertebrates
Vertebrates and Invertebrates Warm-blooded animals regulate their own body temperatures; their bodies use energy to maintain a constant temperature. Cold-blooded animals depend on their…snail
(Encyclopedia) snail, name commonly used for a gastropod mollusk with a shell. Included in the thousands of species are terrestrial, freshwater, and marine forms. Some eat both plant and animal…Brewer's: Pearl
(The). Dioscorides and Pliny mention the belief that pearls are formed by drops of rain falling into the oyster-shells while open; the rain-drops thus received being hardened into pearls…giant clam
(Encyclopedia) giant clam, common name for the largest bivalve mollusk in the world, Tridacna gigas, also known as the bear's paw clam. The giant clam may weigh over 500 lb (225 kg) and attain a…sea slug
(Encyclopedia) sea slug, name for a marine gastropod mollusk that lacks a shell as an adult and is usually brightly colored. Sea slugs, or nudibranchs, are distributed throughout the world, with the…paper nautilus
(Encyclopedia) paper nautilus or argonaut, pelagic, surface-dwelling cephalopod mollusk of the genus Argonauta. Like the closely related octopus, the paper nautilus has a rounded body, eight…nautilus, in zoology
(Encyclopedia) nautilus or chambered nautilus, cephalopod mollusk belonging to the sole surviving genus (Nautilus) of a subclass that flourished 200 million years ago, known as the nautiloids. The…Jean Piaget
Jean Piaget was a Swiss psychologist famous for his studies of the intellectual growth of children and his influential theories of cognitive development. Piaget's background was in biology, and as a…How does the consumer know that shellfish are safe to eat?
Source: National Marine Fisheries Services' Northeast Fisheries Science Center They are the same species. A soft-shell crab is one that has just discarded its shell. Crabs that have just…octopus
(Encyclopedia) octopus, cephalopod mollusk having no shell, eight muscular arms or tentacles, a pouch-shaped body, and two large, highly developed eyes. The prey (crabs, lobsters, and other shellfish…Trending
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