The Tuzo Wilson Seamounts, also called J. Tuzo Wilson Knolls and Tuzo Wilson Knolls, are two young active[1] submarine volcanoes off the coast of British Columbia, Canada, located 200 km (124 mi) northwest of Vancouver Island and south of the Haida Gwaii archipelago (briefly known as the Queen Charlotte Islands.)

The two seamounts are members of the Kodiak-Bowie Seamount chain, rising 500 m (1,640 ft) to 700 m (2,297 ft)[2] above the mean level of the northeastern Pacific Ocean and is a seismically active site southwest of the southern end of the Queen Charlotte Fault.

[3] The two submarine volcanoes are capped by hawaiite and are surrounded by numerous smaller vents, with a total edifice volume of about 12 km3.

Part of the controversy is due to the uncertain origin of the Kodiak-Bowie Seamount chain.

There is a 360 km (224 mi) long gap between recently (Late Pleistocene to Holocene) active Bowie and Tuzo Wilson Seamounts, both of which have erupted alkaline basalts of similar composition.