White Horse Islet is an undeveloped island in the Grand Manan Parish of Charlotte County, New Brunswick, Canada, where the Bay of Fundy. Remainder of parish on mapbooks 490, 497, 500, and 501 at same site.

It is a nesting place for cormorants, but lacks the cliff structure necessary for kittiwake breeding.

Sitting southeast of Little Wood Island,Sailing Directions for Nova Scotia, 1952, US Navy Hydrographic Office White Horse Islet has a steel navigation aid tower.https://iaac-aeic.gc.ca/052/details-eng.cfm?pid=52175&nav=4

In 1943, a military plane Ventura GRV FN973 crashed from Pennfield Ridge, New Brunswick - and a rubber liferaft was found off White Horse with the body of L.H. Ledgingham who appeared to have escaped the initial wreckage but died at sea.The Saint Croix Courier (St. Stephen, NB) - August 19, 1943,

There are two dangerous sunken rocks off its edge.United States Coast Pilot: Atlantic Coast. Eastport to Cape Cod, Volume 1, 1974

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