Step aboard the APNEA from Cais nº1 do Porto de Sesimbra for a two-hour coastal cruise with underwater windows, three stops, and close-up views of the Serra da Arrábida cliffs. Perfect for families and wildlife lovers who want marine sightings without diving.
More ways to explore the area's outdoor wonders
Hang tight — photos are loading
This usually takes just a second.
Difficulty
easy
Duration
2 hours
Fitness Level
Light: minimal exertion required; suitable for most ages and abilities
Wildlife
History
Sesimbra and the Arrábida coast have a long fishing and maritime heritage, and the shoreline reflects centuries of coastal livelihoods.
Conservation
Visitors should avoid feeding wildlife, minimize noise near sightings, and follow operator guidance to protect seagrass beds and rocky reef habitats.
Cityrama
Cityrama is a Portugal-based tour operator headquartered in Porto that offers a wide range of city and regional experiences across northern and central Portugal, plus island routes.
Cityrama operates hop-on hop-off bus services in Porto with 24-hour and 48-hour ticket options and a variety of combined sightseeing packages, including river cruises on the Douro. The operator lists guided and self-guided formats, from short Porto city tours to full-day excursions and thematic experiences such as wine tastings and cultural visits.
Offerings in the Porto catalog include hop-on hop-off options, Porto city tours with boat segments (for example, Porto City Tour com cruzeiro 6 pontes), and package combinations that add visits to wine cellars and Douro river cruises. Regional highlights in the listing include the UNESCO-listed Douro Histórico full-day tour with vineyard visits and tastings, Aveiro & Costa Nova canal boat rides, and multiple Fátima and Lisbon day tours.
Island and nature itineraries on the list reference volcanic and coastal routes such as Na Rota da Lava and Azorean destinations like Sete Cidades and Furnas. Product pages note when a tour includes commentary or multilingual audio guides.
Cityrama's catalog spans short city sightseeing, full-day wine and cultural tours, evening experiences such as Lisbon fado nights, and family options paired with attractions like the oceanarium. Information, schedules, and availability vary by season; check details before booking online.
Base
Porto, Portugal
Operating from Porto city
Ticket Durations
24h & 48h
Hop-On Hop-Off ticket options available
Douro & Wine
Multiple tours
Douro Valley and wine experiences offered
Tours Offered
60+ experiences
City, regional and island tours listed
Book 24h or 48h hop-on hop-off tickets, Douro cruises, or full-day excursions — check availability and tour languages before booking.
Arrive Early
Aim to arrive 20–30 minutes before departure to choose a seat near the underwater viewports.
Protect Your Skin
Bring reef-safe sunscreen and a wide-brim hat—the sun reflects strongly off the water even on cool days.
Manage Motion Sickness
If you’re prone to seasickness, take medication beforehand and choose a central seat where motion is gentler.
Keep Noise Low
Quiet observation improves wildlife sightings—soft voices and slow movements minimize disturbance.
Sunscreen
Protects skin during open-deck stretches and reflective glare from the water.
summer
Binoculars
Helps spot dolphins and distant features on cliffs and reefs.
Light wind jacket
Blocks cool sea breezes on exposed decks, especially in the morning or evening.
spring
Motion-sickness medication
Useful for passengers who are sensitive to boat movement.