Divers often fish for pearls midst oyster-beds, and in more shallow water, but there are nets or dredgers also used for that purpose.
"Lord Dolphin"
Harriet A. Cheever
We are all familiar with the efficacy of these and other causes on the land; and as to the bottoms of seas, we have only to read the published reports of Mr. MacAndrew, the late Edward Forbes, and other experienced dredgers, who, while they failed utterly in drawing up from the deep a single human bone, declared that they scarcely ever met with a work of art even after counting tens of thousands of shells and zoophytes, collected on a coast line of several hundred miles in extent, where they often approached within less than half a mile of a land peopled by millions of human beings.
"The Antiquity of Man"
Charles Lyell
We arrived in the afternoon at a snug little hamlet on the coast opposite the island, whence we embarked in a fleet of disused barges and dredgers.
"Bill the Minder"
W. Heath Robinson