Magnetic shark repellents utilize permanent magnets, which exploit the sensitivity of the Ampullae of Lorenzini in sharks and rays (electrosense). This organ is not found on bony fishes (teleosts), therefore, this type of shark repellent is selective to sharks and rays. Permanent magnets do not require power input, making them ideal for use in fisheries and as bycatch reduction devices.
Read more about Magnetic Shark Repellent: History, Biology, Induction, Recent Findings, Controversy, Publications
Famous quotes containing the words magnetic, shark and/or repellent:
“We are in great haste to construct a magnetic telegraph from Maine to Texas; but Maine and Texas, it may be, have nothing important to communicate.”
—Henry David Thoreau (1817–1862)
“They will tell you tough stories of sharks all over the Cape, which I do not presume to doubt utterly,—how they will sometimes upset a boat, or tear it in pieces, to get at the man in it. I can easily believe in the undertow, but I have no doubt that one shark in a dozen years is enough to keep up the reputation of a beach a hundred miles long.”
—Henry David Thoreau (1817–1862)
“One swiftly forgets his intolerable writing, his mirthless, sedulous, repellent manner, in the face of the Athenian tragedy he instills into his seduced and soul-sick servant girls, his barbaric pirates of finances, his conquered and hamstrung supermen, his wives who sit and wait. He has, like Conrad, a sure talent for depicting the spirit in disintegration.”
—H.L. (Henry Lewis)