The class of jawless fishes: hagfishes and lampreys.
Describing coral species lacking symbiotic zooxanthellae and incapable of
secreting calcium carbonate at a rate suitable for reef production.
animal A multicellular organism unable to synthesize its own food and often capable of
The kingdom to which multicellular heterotrophs belong.
The phylum of animals to which segmented worms belong.
The phylum of animals that includes shrimp, lobsters, krill, barnacles, and insects.
The phylum Arthropoda is the world’s most successful.
The class of the phylum Echinodermata to which sea stars belong.
The class of birds.
baleen The interleaved, hard, fibrous, hornlike filters within the mouth of baleen whales.
Body structure having left and right sides that are approximate mirror
images of each other. Examples are crabs and humans. Compare radial symmetry.
The class of the phylum Mollusca that includes clams, oysters, and mussels.
The order of mammals that includes seals, sea lions, walruses, and sea otters.
A tough, elastic tissue that stiffens or supports.
Cephalopoda The class of the phylum Mollusca that includes squid, octopuses, and nautiluses.
The order of mammals that includes porpoises, dolphins, and whales.
chitin A complex nitrogen-rich carbohydrate from which parts of arthropod exoskeletons are
chiton A marine mollusk of the class Polyplacophora.
The class of fishes with cartilaginous skeletons: the sharks, skates, rays,
The phylum of animals to which tunicates, Amphioxus, fishes, amphibians,
reptiles, birds, and mammals belong.
A pigmented skin cell that expands or contracts to affect color change.
The phylum of animals to which corals, jellyfish, and sea anemones belong.
Type of cell found in members of the phylum Cnidaria that contains a stinging
capsule. The threads that evert from the capsules assist in capturing prey and repelling
A ctrophic organism.
Any of more than 6,000 species of small cnidarians, many of which are capable of
generating hard calcareous (aragonite, CaCO3) skeletons.
A camouflage pattern featuring a dark upper surface and a lighter bottom
The class of phylum Arthropoda to which lobsters, shrimp, crabs, barnacles, and
Camouflage; may be active (under control of the animal) or passive (an
unalterable color or shape).
The resistance to movement of an organism induced by the fluid through which it swims.
The phylum of exclusively marine animals to which sea stars, brittle stars,
sea urchins, and sea cucumbers belong.