
easy
2–3 hours
Suitable for most fitness levels; must be able to board a small boat and sit or stand for the duration.
Board a small, research-led boat from Chahué Marina and listen as humpbacks sing through a hydrophone while dolphins and sea turtles weave through the wake. This 2½-hour excursion pairs marine-biologist guides with local spotters for respectful, high-probability sightings.
The palapa at Chahué Marina smells of salt and sunscreen, a low humming of engines and Spanish conversation under the afternoon sun. You step aboard a tidy, low-profile craft, joined by no more than a dozen people, and the harbor slides away: mangrove shadows give way to open blue. A marine biologist on the bow lifts a hydrophone — a small, deliberate microphone that turns the ocean into a living speaker — and the sea answers with distant, rolling song.

Be at the palapa 15 minutes before departure to use bathrooms and get a short briefing; boats leave on time.
Trim your meal intake beforehand and bring medication or acupressure bands if you’re prone to seasickness.
Open ocean reflects strong UV—use broad-spectrum sunscreen, a hat, and polarized sunglasses to reduce glare.
When animals are spotted, stay quiet and follow the guides’ instructions to avoid disturbing natural behaviors.
The Huatulco coastline has long been used by coastal communities; modern tourism development in the 1980s emphasized a model of protected bays and managed access.
The outfitter supports local cetacean research and practices distance-based viewing to minimize disturbance; guests are asked not to feed or approach wildlife.
Cuts surface glare and helps you spot silhouettes and splashes at distance.
summer specific
Morning and open-ocean conditions can be breezy and cool, especially early in the season.
winter specific
Tours provide bottled water but a refillable bottle reduces waste and keeps you hydrated.
Pills or bands make the trip comfortable if you’re susceptible to seasickness.