In New England, after a storm, lobster traps are sometimes washed ashore. It is a punishable offense to take them, fine and or jail time.
In days when the traps were made of wood they were often stolen to make decorative coffee tables etc. The wood turns a lovely grey after submersion under sea water. The current Viny-covered-wire one don't seem to have the same aesthetic appeal.
You may drag the trap out of the shallow water but do *not* take it above the high tide line. All traps have a tag with owner name and a phone number (usually the local fishermen's co-op) on it. It's much appreciated when people call with info on locations of washed-ashore raps. The traps are expensive and a lobsterman has a hard life and his family depends on the catch. By the way, traps, (sometimes called "pots,") are usually a longish box shape.
The old fashion traps of wood, suitably weathered are still made by some old timers -- usually available thru giftie shoppies -- or you can ask a lobsterman and usually get a name and number ... if you are up early! Lobstermen go to sea about 4:30 a.m. and return to the dock between 10:30 and noon depending ....