Below the warm, tranquil waters of the Bahía de Banderas is a world of stingrays, tropical fish and garishly colored corals. Great spots for diving and snorkeling are Los Arcos, the rocky islands south of the city center, and the Islas Marietas, which are surrounded by reefs, tunnels, walls and underwater caves. Dolphins, whales and giant manta rays are often sighted between December and April.
