New Jersey Scuba Diving

Norway Rat

Rattus norvegicus

Size: 6-8" (body)

Habitat: everywhere

Notes:
Sorry to say, but rats are especially common around watery habitats and are excellent swimmers. They are particularly fond of beaches, marshes, ships, docks, and jetties. The next time you go diving at Shark River, take a careful look in the rocks and you will likely see one or two scampering around, dining on old fishing bait and washed-up detritus, even in broad daylight. The Norway Rat is introduced from the Old World, and in most areas today it is more common than the native Black Rat.

Compass

A compass is the most basic and inexpensive piece of navigational equipment and should be bought at the same time as the rest of your gauges.

In a beach or inlet dive your compass is your single most important tool - it tells you which direction is the shore. When wreck diving, a compass is useless if you don't look at it until you're lost. Take a bearing as soon as you hit the bottom, just in case. In a boat dive, directions such as "turn right from the anchor" can often steer you in the opposite direction, if the current reverses and pulls the boat around to the other side. Compass bearings are much more reliable.

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Norway Rat

Freshwater Mammals

Compass