Carapace: An upper platelike shield that covers all or part of certain arachnids; a shield-like plate covering the body of some animals.
Carnivore: An animal that eats the flesh of other animals.
Carnivorous: Meat eating.
Chimera: A single organism that has features of two or more species.
Chitin: A material similar to fingernails that is the main component of the outer skeletons of some animals.
Cholesterol: A substance in animals' cells and body fluids that "cleans" the blood; too much of it can be unhealthy.
Chrysalis: The pupa of a butterfly.
Clutch: A group of eggs.
Coevolution: Description of two or more groups of organisms that influence each other's evolution.
Colony: A grouping of animals that typically lives in a cluster, or mass; such groups of sea organisms are found together on a solid object, such as a coral reef.
Compound eyes: Eyes made up of many lenses.
Contamination: The act of making impure, or dirty, by adding a harmful substance.
Coral: A tiny sea-dwelling animal whose hard skeleton, also called coral, forms reefs in the ocean, often pinkish rose in color.
Courtship: An animal's activities that are meant to attract a mate.
Cove: A small, sheltered inlet of the sea.
Critically Endangered: Facing an extremely high risk of extinction in the wild in the near future.
Crustacean: An animal that lives in water and has a soft, segmented body covered by a hard shell, such as lobsters and shrimp.
Crypsis: A form of camouflage in which an animal imitates specific objects in the environment.
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