noun, Cell Biology. 1. a network of tubular membranes within the cytoplasm of the cell, occurring either with a smooth surface (smooth endoplasmic reticulum) or studded with ribosomes (rough endoplasmic reticulum) involved in the transport of materials.
The most widely distributed of all sea turtles; found in the Gulf of Alaska and south of the Bering Sea in the northeastern Pacific to Chile in the southeastern Pacific. In the Barents Sea, Newfoundland and Labrador in the North Atlantic; around Argentina and South Africa in the South Atlantic.
The leatherback sea turtle is a circumglobal species, meaning that it can range throughout almost all the oceans of the world. It nests on tropical beaches in the Atlantic, Indian, and Pacific Oceans. Once abundant throughout the worldâs oceans, all eight species of sea turtles are now threatened or endangered.