Turtle Bay Resort sits on Oahu's north shore, where the sharp-sloped Punamano Mountains to the south give way to wide plains that meet the Pacific Ocean.  The eastern border of the resort is just beyond Kahuku Point, the northernmost point on Oahu.  The western border is Kawela Bay, one of the most beautiful waters in all of Hawaii.

Shark's Cove is a popular site for snorkeling, and is fairly shallow. Depths range up to 20 feet at the cove's mouth. Diving conditions are better outside the cove. Caves can be found around the cove's northwest point, and to a lesser extent to the south. The area to the left of the cove offers excellent night diving. The bottom outside the cove slopes to about 45 feet. Visibility is generally poor inside the cove, but improves quickly outside. The origin of the cove's name is uncertain, but sharks are no more common here than anywhere else on the island. Shark's Cove is one of the North Shore's most popular SCUBA destinations.