Berlenga Island Boat Trip with Glass-Bottom Cave Tour and Snorkeling Kit
Explore the caves, reefs, and crystal-clear waters of one of Portugal's most protected natural reserves.
This Berlenga Island boat trip combines a scenic crossing from Peniche with a guided glass-bottom boat visit to the island's famous sea caves and a snorkeling kit for independent underwater exploration. The route passes through a UNESCO-recognized biosphere reserve where marine biodiversity and dramatic coastal geology meet. It is one of the most complete half-day ocean experiences available on Portugal's Silver Coast.
Berlenga Grande is the main island of the Berlengas archipelago, located roughly 12 kilometres off the coast of Peniche. Access is strictly regulated to protect the local ecosystem, and the number of daily visitors is capped by national conservation authorities. Booking in advance and registering on the BerlengasPass platform before arrival is not optional — it is a legal requirement enforced at embarkation.
The glass-bottom lancha tour lasts approximately 25 minutes and passes through the Blue Grotto and surrounding sea tunnels, giving passengers a close view of the submerged rock formations and marine life without entering the water. After the cave visit, guests receive a full snorkeling kit — mask, tube, and fins — to explore the shallows independently during their free time on the island. A wetsuit can be added for an additional fee, subject to availability.
Departures operate from the Feeling Berlenga stand at Peniche Marina, and the crossing is made aboard one of four available vessels: a catamaran, sport yacht, or semi-rigid inflatable, assigned according to group size and daily conditions. The company reserves the right to cancel or postpone trips due to adverse weather, low passenger numbers, or force majeure events, in which case no charge is applied to the customer.
Tour Highlights
Round-trip boat crossing from Peniche Marina to Berlenga Island aboard a catamaran, sport yacht, or semi-rigid vessel.
25-minute guided visit to the sea caves aboard a glass-bottom lancha, with views of underwater rock formations and marine life.
Full snorkeling kit included — mask, fins, and tube — for independent exploration of the island's clear coastal waters.
Professional skipper, sailor, and guide accompany the group throughout the experience for safety and orientation.
Free time on Berlenga Grande to walk the island's pedestrian paths, swim, or visit the 17th-century Fort of Sao Joao Baptista (seasonal, entry fee applies).
Access to one of Europe's most significant marine biosphere reserves, home to seabirds, grouper, moray eels, and sea anemones.
Itinerary
Guests are asked to arrive at Stand No. 4 — Feeling Berlenga, Largo da Ribeira, at least 40 minutes before departure. On-site parking is available nearby subject to availability, with a ticket cost of approximately 2.50 euros for five hours.
The crossing from Peniche Marina to Berlenga Grande takes place aboard one of Feeling Berlenga's fleet vessels, assigned based on group size and sea conditions. The journey covers approximately 12 kilometres of Atlantic Ocean.
On arrival, guests board a glass-bottom lancha for a 25-minute guided tour of the island's sea caves and rock tunnels. The transparent hull allows clear views of the seabed and the characteristic blue-lit grotto interiors.
Guests receive their snorkeling kit and are free to swim, explore the island's walking paths, or visit the Fort of Sao Joao Baptista if open. Wetsuit rental is available for an additional fee depending on availability.
The return boat trip brings guests back to Peniche Marina, completing the round-trip experience within the 3-to-4-hour window.
What Is Included and Excluded
Included
- Round-trip boat crossing from Peniche Marina to Berlenga Island
- Glass-bottom lancha cave tour (approx. 25 minutes)
- Snorkeling kit: mask, tube, and fins
- Skipper, sailor, and guide throughout the experience
Not Included
- Mandatory Berlenga Island tourist tax — must be pre-registered and paid via the BerlengasPass platform before boarding
- Wetsuit rental (optional add-on, additional fee, subject to availability)
- Food and beverages
- Entry fee to Fort of Sao Joao Baptista (approximately 1 euro per person, seasonal availability)
- Parking at Peniche Marina (approximately 2.50 euros for 5 hours)
Important Information
Reserve Your Place on the Berlenga Island Boat Trip
Spaces are limited by conservation regulations and fill quickly during the summer months. Secure your spot and complete your BerlengasPass registration before your travel date.
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