Try scuba in the Luíz Saldanha Marine Reserve off Sesimbra: a half-day intro that combines instructor-led shallow dives with a seabed clean-up and a "Mission Deep Blue" certificate. Ideal for first-time divers who want an accessible, eco-conscious ocean experience.
More ways to explore the area's outdoor wonders
You step off the small dive boat and the Arrábida coast unfolds — warm limestone cliffs cutting into indigo water, Posidonia meadows swaying beneath a surface that suddenly feels alive. An instructor checks your gear; bubbles rise like punctuation as you learn regulator breath and neutral buoyancy in protected coves. The immediate thrill is simple: you move through a world that resists hurry, where a curious wrasse inspects your fins and a mottled octopus slips into a crevice.
Difficulty
moderate
Duration
4 hours
Fitness Level
Comfortable with basic swimming and able to move in and out of boats; moderate cardiovascular fitness recommended
Wildlife
History
Sesimbra is a long-standing fishing town with maritime traditions; the Luíz Saldanha area is a formally protected marine reserve known for its biodiversity along the Arrábida coast.
Conservation
The eco-dive emphasizes minimal-impact practices and seabed clean-ups; follow instructor guidance to avoid disturbing habitats and report recovered debris for proper disposal.
Reserve your spot on the Eco - Try Dive today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Arrive Early
Plan to arrive 30–45 minutes before start time for paperwork and kit fitting.
Health & Fitness
Participants should have moderate fitness and disclose medical issues; not recommended for pregnant travelers.
Protect the Reef
Use reef-safe sunscreen and avoid touching or stirring the seabed during the clean-up.
Seasickness Prep
If you’re prone to motion sickness, take preventative meds and sit on deck to steady before entering water.
Swimsuit & Towel
Wear under your wetsuit; you’ll want a dry change and towel after the dive.
Reef-safe Sunscreen
Protects your skin and the marine environment during surface intervals.
summer
Reusable Water Bottle
Stay hydrated between briefings and after surfacing — the sun and adrenaline dehydrate quickly.
Motion-sickness Tablets
Useful if you’re sensitive to boat rides or choppy conditions before entering the water.