North Seymour Island: Galapagos Sea Lions, Blue-footed Boobies and magnificent Frigatebirds are abundant on North Seymour Island. The island was formed by a series of submarine lavas containing layers of sediment that were uplifted by tectonic activity. The island is characterized by its arid vegetation zone. Santa Cruz Island: Black Turtle Cove is situated in the northern part of Santa Cruz. This inlet is surrounded by mangroves and is only accessible by dinghy. The shallow cove is a safe haven for young marine life. Blacktip and whiten tip reef sharks, sea turtles, and a variety of rays are often spotted here.