Vernix caseosa is a protective substance that covers the surface of the skin of the fetus during the sixth and seventh month. In Latin, what does caseosa mean?
Annelids are found worldwide in all types of habitats, especially oceanic waters, fresh waters, and damp soils. Most polychaetes live in the ocean, where they either float, burrow, wander on the bottom, or live in tubes they construct; their colours range from brilliant to dull, and some species can produce light. The feather duster (Manayunkia speciosa) inhabits the Great Lakes and some rivers of the United States.
Clam species of primary interest to fishers include Manila, native littleneck, butter, razor and varnish clams. Manila, littleneck, butter and varnish clams live in gravel and sand beaches in protected bays.Razor clams live on wave-swept sand beaches open to the Pacific Ocean.1  Manila clam: lines up and across outer surface of shell, elongated in profile, purple inside of shells, while.anila, littleneck, butter and varnish clams live in gravel and sand beaches in protected bays. Razor clams live on wave-swept sand beaches open to the Pacific Ocean. 1  Manila clam: lines up and across outer surface of shell, elongated in profile, purple inside of shells, while.