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 last known male/female pair reside at Suzhou Zoo in China, where it's hoped that they will mate one day. Here's the list of the Top 25 Most Endangered Turtles: Chelonoidis abingdonii Rafetus swinhoei. (One of the last of its kind: A Yangtze giant softshell turtle, Rafetus swinhoei, surfaces in a lake in Vietnam.