Cape Marshall

Cape Marshall on Isabela's northeastern tip is one of the only places on Earth where divers can watch marine iguanas grazing on algae-covered lava shelves underwater, their prehistoric forms gliding past flightless cormorants hunting fish. Strong upwellings from the Cromwell Current keep the water cold and rich with nutrients, drawing schools of hammerhead sharks, eagle rays, and Galapagos sharks along the dramatic volcanic walls. Visibility can be limited but the sheer concentration of endemic wildlife makes every dive extraordinary.