Marine Life Near Jacó

Parrotfish: The Reef's Colorful Sand-Maker

Fish you'll meet snorkeling · Snorkel Jaco
Marine Life Near Jacó

Octopus: The Cove's Clever Quick-Change Artist

Fish you'll meet snorkeling · Snorkel Jaco

Of all the creatures you might meet snorkeling near Jacó, none sparks more excitement than an octopus. Shy, clever, and masters of disguise, they're the ultimate hide-and-seek champions of the cove — and finding one is a story guests tell for the rest of their trip.

Rocky tidepools and crevices along the Central Pacific coast near Jacó, Costa Rica, where octopuses hide
Octopuses tuck into rocky nooks and crevices — exactly the terrain we snorkel near Playa Mantas.

How to recognize an octopus

The hard part about spotting an octopus is that they don't want to be spotted. They're soft-bodied, with eight arms and no shell, and they can change color and even texture in an instant to blend into the rocks. Often you'll notice the octopus itself last — first you might catch a single curious eye, a cluster of arms folded into a crevice, or a neat little pile of empty shells outside a den, the telltale "garden" of a well-fed octopus.

The ocean's quick-change artist

Octopuses are among the most intelligent animals in the sea. They solve problems, remember places, and use their incredible camouflage both to hide from predators and to sneak up on the crabs and shellfish they eat. Watching one flow across the rocks — shifting from mottled brown to smooth gray as it moves — is one of the most unforgettable sights in the water, which is why our guests get so excited when a guide finds one.

Fun fact: an octopus has three hearts and blue blood. Two hearts pump blood to the gills and one pumps it to the rest of the body, and their blood is blue because it uses copper instead of iron to carry oxygen. All that, plus eight arms that can taste what they touch — no wonder they feel like something from another world.

Where you'll see them in our cove

Octopuses love the rocky edges and crevices, not the open sand — so we watch the nooks and overhangs where they tuck themselves away. They're most active and visible in the calm, clear morning water, and a sharp-eyed guide who knows the cove makes all the difference, since an octopus in camouflage is nearly invisible to an untrained eye. When one turns up, it's the highlight of the whole tour.

Reef fish and rocky habitat in the clear cove near Jacó, Costa Rica, where octopuses hunt
The same rocky, fish-filled habitat that draws octopuses out to hunt.

Look, don't touch

Octopuses are delicate and easily stressed, so the rule is always to watch and never reach. If you float quietly and give one space, it may relax and go about its business right in front of you — the best show you could ask for. Our guides keep everyone at a respectful distance so these shy, remarkable animals stay comfortable and the cove stays healthy.

The octopus is just one of many characters down there. For the full cast, read our guide to the fish and marine life you'll see snorkeling near Jacó, or see real guest photos and reviews on the Snorkel Jaco reviews.

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