When the deck of a sponge boat is piled high with this unsavory spoil of the sea, she is headed towards the nearest key on which her crew have established a crawl, [B] and her cargo is tossed into it. The crawl is a square pen of stakes built in the shallow water of some sheltered bay, and in it the sponges lie until their animal matter is so decomposed that it will readily separate from them. Then they are stirred with poles or trodden by the feet of the spongers until they are free from it, when they are taken from the crawl, and spread on a beach to dry and whiten in the sun. When a full cargo has been obtained, they are strung in bunches, and taken to Key West to be sold by the pound at auction. There they are trimmed, bleached again, pressed into bales, and finally shipped to New York.