Shearwaters are not easy to see as they come and go at dusk, but a closed-circuit television camera in one of the burrows allows subterranean nesting activity to be seen on the screen in Lockley Lodge on the mainland at Martin's Haven. The remains of shearwaters killed by the island's population of great black-backed gulls can also be seen. An overnight stay in the hostel run by the Wildlife Trust of South and West Wales allows guests to hear and see the shearwaters.