New Jersey Scuba Diving

Beach Crabs

Ghost Crab — Ghost Crab
Ocypode quadrata

Fiddler Crab — Fiddler Crab
Uca spp

These small crabs are largely terrestrial. Female Fiddler Crabs lack the huge claw of the male, which is very strong but is used only in dance-like territorial displays. Several species in the area differ mainly by habitat. Fiddlers prefer marshes and stream banks, where huge colonies riddle the peat with tunnels near the waterline. Almost entirely terrestrial, you will find Ghost Crabs skittering across the beaches at night. Placed in the water, they may even drown! Both grow to a body size of approximately 1 inch.

Fiddler Crabs — Fiddler Crabs tend to live in nasty places. Note the odd left-handed male at upper-right.

US Fish & Wildlife Service Species Profile

Water Pollution

Industrial Pollution

pollution

In the United States, industry is the greatest source of pollution, accounting for more than half the volume of all water pollution and for the most deadly pollutants. Some 370,000 manufacturing facilities use huge quantities of freshwater to carry away wastes of many kinds. The waste-bearing water, or effluent, is discharged into streams, lakes, or oceans, which in turn disperse the polluting substances. In its National Water Quality Inventory, reported to Congress in 1996, the U.S. Environmental Protection Agency concluded that approximately 40% of the nation's surveyed lakes, rivers, and estuaries were too polluted for such basic uses as drinking supply, fishing, and swimming. The pollutants include grit, asbestos, phosphates and nitrates, mercury, lead, caustic soda and other sodium compounds, sulfur and sulfuric acid, oils, and petrochemicals.

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