Seal Island (formerly known as Witte Klip, meaning "White Rock") is a small land mass located 5.7 kilometres (3.5 miles) off the northern beaches of False Bay, near Cape Town in South Africa.

The island is an outcrop of Cape granite and rises no more than about 4 to 6 metres (13 to 20 feet) above the high tide mark.

A radar mast was built on the island during World War II by a crew who lived in prefabricated huts for the duration of the construction but this tower gradually succumbed to corrosion and was blown over in a winter storm in 1970.

It has been shown that if the seals enter the "Ring of Death" (where the sharks circle the island) on the surface instead of at the murky bottom, they are more likely to be picked off by the faster and more aggressive great white.

A 2019 sequel, "Air Jaws Strikes Back" names a "second Seal Island", this time located in Mossel Bay on the southeast coast of South Africa.