Willie mentioned that at low tide, it is possible to swim out to Snake Gully by the buoy visible from just around the corner from the beach. Although it is high tide now, I thought I'll check it out just in case, since I really wanted to see Snake Gully. Snake Gully is home to katuali, a sea snake found only in Niue. Although extremely venomous, they are not aggressive, and pose minimal danger to humans. Since they live on the floor of the gully but need to breath at the surface, snakes are always swimming up and down around Snake Gully. Someone I met before arriving in Niue told me that they are curious, but if you don't want them coming right up to you to check you out, you can just bop them on the head and they'll go away.