The Metkayina are the largest of over fifty clans of Reef People—an aquatic subspecies of Na’vi who live among coastal reefs, barrier reefs, and atolls. Their idyllic island home, fringed with enormous mangroves among which they have built their villages, is protected from the wild ocean by a barrier reef that forms a natural seawall. In every way, Metkayina life is tied to the rhythms and wildlife of their rich marine habitat, which they hold dear. Although relations with other clans are peaceful, the Metkayina maintain their reputation as fierce warriors who would die to protect their home. The Metkayina have an ancient spiritual connection to the Tulkun, whom they consider family.
The Metkayina follow the philosophy known as the Way of Water. They are able to hold their breath for long periods of time while they freedive, and use a sign language for underwater communication. Clan members honor their marine environment in nearly all their constructions. Inspired by pebbles in the ocean that are worn over millennia, they create many smooth and spherical surfaces, which are strong and deflect water and wind. Like the Omatikaya, the Metkayina are masters of weaving, but their woven materials are flax-like, like rattan.
Fish are an important primary food source for the Metkayina, and fishing is an integral part of their culture. Fishers are highly respected, frequently being depicted in Metkayina artwork and regarded as heroes in their proverbs and stories. For daily sea travel, the Metkayina ride ilu in the same way that other clans ride pa’li. The tsurak serves the clan in a similar way as ikran serve other clans, although the bond with a tsurak must be maintained if it is to remain loyal. They also construct canoes.