sperm+of+fishes
121Stingray — This article is about the group of fishes. For other uses, see Stingray (disambiguation). Stingrays Temporal range: Early Cretaceous–Recent[1] …
122Coral reef — Marine habitats Biodiversity of a coral reef Lit …
123Cookiecutter shark — For other species of cookiecutter sharks, see Isistius. Cookiecutter shark Conservation status …
124Cloudy catshark — Cloudy catshark …
125Antarctica — /ant ahrk ti keuh, ahr ti /, n. the continent surrounding the South Pole: almost entirely covered by an ice sheet. ab. 5,000,000 sq. mi. (12,950,000 sq. km). Also called Antarctic Continent. * * * Antarctica Introduction Antarctica Background:… …
126chordate — /kawr dayt/, Zool. adj. 1. belonging or pertaining to the phylum Chordata, comprising the true vertebrates and those animals having a notochord, as the lancelets and tunicates. n. 2. a chordate animal. [1885 90; see CHORDATA] * * * Any member of… …
127immune system — Anat. a diffuse, complex network of interacting cells, cell products, and cell forming tissues that protects the body from pathogens and other foreign substances, destroys infected and malignant cells, and removes cellular debris: the system… …
128ray — ray1 raylike, adj. /ray/, n. 1. a narrow beam of light. 2. a gleam or slight manifestation: a ray of hope. 3. a raylike line or stretch of something. 4. light or radiance. 5. a line of sight. 6. Physics, Optics. a …
