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.
Specific Types of Turtles: 1  The Bog Turtles - There are small turtles in the world, but the Bog turtle is the smallest and is one of the most rare turtles around. The Bog turtle rarely grows four inches. The Musk Turtles - Musk turtles, also known as stinkpots, seem to prefer deep, still water in lakes, ponds, and sluggish streams with muddy bottoms and an abundance of plant life. The Painted Turtles - The Painted Turtle must be the most common widespread turtle.