Ecotourism run by the Comcáac (Seri) of Punta Chueca, the village north of Bahía de Kino that faces Isla Tiburón across the Canal del Infiernillo. Tiburón is the Seri's own island and a protected reserve, and going with the community is the proper way to visit.
Every package includes the boat to the island. The short one adds a night in a cabin in the village, face painting in the traditional patterns and a meal; the two-day trip adds kayaks and a hike to the Piedra de Gigante; the three-day one kayaks across the channel and camps on the island. WhatsApp is the only contact they publish.