Natural History. A member of the weasel family, the sea otter is the smallest marine mammal in North America. The southern, or California, sea otter ranges along the coast from San Mateo County southward through Monterey County and down to Santa Barbara County.Unlike other marine mammals, sea otters don't have a thick layer of blubber. member of the weasel family, the sea otter is the smallest marine mammal in North America. The southern, or California, sea otter ranges along the coast from San Mateo County southward through Monterey County and down to Santa Barbara County. Unlike other marine mammals, sea otters don't have a thick layer of blubber.
In modern plumbing, a drain-waste-vent (or DWV) is part of a system that removes sewage and greywater from a building, and regulates air pressure in the waste-system pipes to aid free flow.t the building drain system's lowest point, the drain-waste vent is attached, and rises (usually inside a wall) to and out of the roof. Waste exits from the building through the building's main drain and flows through a sewage line, which leads to a septic system or a public sewer.
1. waste pipe-a pipe through which liquid is carried away. drainpipe, drain. culvert-a transverse and totally enclosed drain under a road or railway. pipage, pipe, piping-a long tube made of metal or plastic that is used to carry water or oil or gas etc.scupper-drain that allows water on the deck of a vessel to flow overboard. sewer, sewerage, cloaca-a waste pipe that carries away sewage or surface water. soil pipe-drain that conveys liquid waste from toilets, etc.trap-drain consisting of a U-shaped section of drainpipe that holds liquid and so prevents a return flow of sewer gas.. waste pipe-a pipe through which liquid is carried away. drainpipe, drain. culvert-a transverse and totally enclosed drain under a road or railway. pipage, pipe, piping-a long tube made of metal or plastic that is used to carry water or oil or gas etc.