Nakwakto Rapids

Divers enter the water ONLY at slack tide. Specific warning from divemaster to keep the island on the left, drop to 25-35 feet, and at 12-15 minutes into the dive exist on the lee side of the island. Failure to do so and there is no chance to fight current and beginning whirlpools which will sweep you deep into the boat channel. The reason to dive is to view large collection of gooseneck barnacles. Dive must only be done with a dive operator familiar with the site. This is the world's fastest tidal exchange at 22 knots. There is only a 20 minute time line underwater at slack tide. Nakwakto Rapids is also known as Tremble Rock.