First off, since 2000, catfish and tilapia rank as two of the most popular fish consumed in the United States thanks mainly to their taste and relatively low expense. And both contain heart-healthy omega-3 fatty acids.
Elevations and depths of the Great Lakes are shown by a profile in figure 41.6. Superior has the greatest depth, 1330 ft (370m); Michigan, Huron, and Ontario are of moderate depths, 800 to 900 ft (240 to 275 m); while by comparison Erie is very shallow, 200 ft (60 m).
Not only is Lake Superior the largest of the Great Lakes, it also has the biggest surface area of any freshwater lake in the world. It holds about 3,000 cubic miles of water - enough to fill all the other Great Lakes plus Lake Erie three times over. The average depth of Superior is about 500 feet.