Swimming with whale sharks at Bahia de los Angeles

Swimming with whale sharks at Bahia de los Angeles is a snorkel-based wildlife encounter, not a dive, and requires no diving certification or advanced swimming ability beyond basic comfort in open water with a mask, snorkel and fins. Juvenile whale sharks, typically 4-7 metres long, gather to filter-feed on plankton in the shallow northern end of the bay through late summer and autumn, and licensed pangas from the village take small groups out to swim alongside them under a strict no-touch, no-flash-photography rule enforced by the local marine reserve. Trips generally include the boat, a guide and life jackets; snorkellers should bring or rent their own mask, snorkel and fins, plus a rash vest or 3mm shorty wetsuit for the cooler water and reef-safe sunscreen, since regular sunscreen is discouraged near the feeding sharks. The village cooperatives that run these trips are licensed and monitored by the reserve, and booking directly at the waterfront on arrival is more reliable than going through unlicensed pangas that sometimes approach visitors on the road into town. Guides give a short safety and etiquette briefing before entering the water, covering the no-touch rule, keeping a respectful distance from the shark's tail, and how to signal the boat if a swimmer becomes separated from the group. The whale sharks are present from July through October, with sightings most reliable in August and September; outside this window the sharks move on and trips do not run.