Arrábida Dolphins & Whales Marine Biologist Tour from Sesimbra

A marine biologist travels with you to read the dolphins' behavior instead of just spotting them.

A three-hour dolphin and whale observation tour departing from Sesimbra port into Arrábida Natural Park, led by a marine biologist who explains feeding habits, social interactions and the animals' natural behavior. The boat stops at sea-accessible beaches and caves along the coast where you can swim. Guides speak English, Spanish, Portuguese and French, and children from age 2 are welcome.

Step-by-step itinerary

Dolphin and whale observation tour

• Depart from Abrigo de Sesimbra port
• Look for Bottlenose and Common Dolphins
• Learn from marine biologist about dolphins
• Observe wildlife and various bird species
• Swim and sunbathe on secluded beach
• Visit caves and rock formations
• Hear 18th century local stories

The experience

The boat leaves Sesimbra at 10am and heads into Arrábida Natural Park to search for bottlenose dolphins and common dolphins in their natural habitat. A marine biologist travels with you and narrates what you are seeing, not just that dolphins are there, but how they hunt, how they interact with each other, what the different clicks and movements mean. You watch them without the boat disturbing their behavior, which is the whole point of moving through the water the way you do.

Beyond the dolphins, the tour takes in the coastline itself. You'll see different seabirds and other wildlife, and the boat navigates close enough to explore caves and rock formations carved into the cliffs. The guide shares the local history: 18th-century stories tied to the region and the geography around you. The water is clear enough that you can see down into it, and the beaches here are only reachable by sea, which is why they stay wild.

At the end of the observation, you have the option to swim and sunbathe on one of these isolated beaches or bays. The whole outing runs three hours from departure to return. Bring a towel if you plan to swim. The water temperature and conditions vary by season, so check what to expect before you book.

What’s included

• Marine biologist guide.
• boat cruise through Arrábida Natural Park.
• access to sea-accessible beaches and caves.
• all fees and taxes.
• local guide commentary on history and wildlife.
• service animals welcome.

Before you book

Lasts 3h, runs every day at 10:00, from € 55 per person, with a live guide in English, Spanish, French and Portuguese and with free cancellation up to 24 h before.

Days and timesEvery dayDeparts at 10:00

Book up to4h before

AgesAdult (8 to 80 years) · Child (4 to 7 years) · Infant (2 to 3 years)

GroupUp to 30

Live guideEnglish, Spanish, French and Portuguese

Meeting point and pickupNo hotel pickup: you go to the meeting point. Ends back at the starting point.

Cancellation and refundsFree cancellation up to 24 h before the start. After that, no refund.It may be canceled due to bad weather or if the minimum number of travelers isn't reached. If that happens, you're offered another date or a refund.

Prices and times updated yesterday

Good to know

Low physical effortStroller-friendlyPets welcomePublic transport nearby

Operated by DayDream Experience

Is this one for you?Book this tour if you want a guide who explains what the dolphins are actually doing rather than just pointing them out, or if you're traveling with children from age 2 and want a morning that combines wildlife observation with optional swimming in an isolated bay.

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Top questions

What languages is the tour guided in?

Live guide in English, Spanish, French and Portuguese.

Can children come?

Yes. Ticket types: Child (4 to 7 years); Infant (2 to 3 years).

What happens if it rains?

It may be canceled due to bad weather. If that happens, you're offered another date or a refund. Free cancellation up to 24 h before the start.

What dolphins and whales will I actually see in Arrábida?

Bottlenose dolphins and common dolphins are the main species you'll encounter in the waters of Arrábida Natural Park. The marine biologist guide can explain their behavior and habits as you observe them, though sightings depend on where the animals are on the day you go.

Can I swim during the tour, or is it just observation?

Swimming is optional and happens at the end of the tour. After the dolphin observation and the exploration of caves and rock formations, you have the choice to swim and sunbathe on one of the sea-accessible beaches or bays in the natural park.

How long is the tour and what time does it start?

The tour runs three hours total. You meet at Daydream Experience Sesimbra at 9:45am, and the boat departs at 10am from the port of Abrigo de Sesimbra.

Are there caves to explore along the coast?

Yes, the boat navigates along the Arrábida coastline and stops to explore caves and rock formations. The guide shares the local history and stories connected to the region as you pass through them.