Scan the underwater cliffs of Arrábida from a buoyant seaview board and glide over caves, seagrass beds, and shoals of seabream. This two-hour guided run from Sesimbra mixes geology, accessible snorkeling, and close-up marine encounters.
More ways to explore the area's outdoor wonders
Morning light slices the limestone faces of Arrábida as a speedboat threads between cliffs and caves. You lie prone on the seaview board, fins ready, and peer through a porthole into a reef where caves, tunnels, and boulders shape currents and the fish move like punctuation in clear water.
Difficulty
easy
Duration
2 hours
Fitness Level
Suitable for most fitness levels; basic swimming comfort recommended for surface transits
Wildlife
History
Local fishing communities around Sesimbra and Setúbal have worked these coves for centuries; wartime watchposts dotting the cliffs recall strategic uses of the coast.
Conservation
Arrábida is a protected natural park—visitors should avoid trampling seagrass beds and use reef-safe products to reduce impacts on sensitive habitats.
Reserve your spot on the Sesimbra by Seaview Board today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Arrive early for briefing
Plan to be at the dock 20–30 minutes before departure for check-in and a safety briefing.
Choose calm conditions
Morning slots usually have calmer seas and better underwater visibility—opt for 10:00 departures when available.
Protect the reef
Use reef-safe sunscreen and never touch seagrass or marine animals—guides will point out viewing distances.
Secure valuables
Bring a waterproof camera or a dry bag; phones left on the boat can get wet from spray.
Swimwear and quick-dry towel
Wear under the provided wetsuit and dry off quickly after the tour.
summer
Reef-safe sunscreen
Protects skin and marine ecosystems from oxybenzone and similar chemicals.
summer
Water shoes or reef booties
Useful for boarding from rocky ramps and walking around the dock.
spring
Waterproof camera or action cam
Capture underwater scenes through the porthole and above-water cliff views.