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6 Topic Pages Found in Marine Sciences and starting with the letter P
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Open Pacific Ocean
Pacific Ocean

largest and deepest ocean, c.70,000,000 sq mi (181,300,000 sq km), occupying about one third of the earth's surface; named by the explorer Ferdinand

Open Paramecium

( parəmē'sĭəm ), unicellular organism of the genus Paramecium, of the ciliate phylum Ciliophora found in freshwater throughout the world. Like other

Open Pearls

Originally, and until the last century, one could only dive for pearls, and few of the shells collected during dives contained any. They were thus


( plăt'əpəs ), semiaquatic egg-laying mammal, Ornithorhynchus anatinus, of Tasmania and E Australia. Also called duckbill, or duckbilled platypus, it


PRECIPITATION REFERS BOTH to the process by which particles fall from clouds to the earth below, and to those particles themselves. Owing to various

Protective coloration

coloration or color pattern of an animal that affords it protection from observation either by its predators or by its prey. The most widespread form