Aquarium marin de Trégastel

What it is

The Aquarium Marin de Trégastel is set inside caves under blocks of pink granite, about 50 m from Coz-Pors beach. The roof of the first cave alone weighs some 5,500 tonnes. It is a small aquarium devoted to the wildlife of the Breton coast and the English Channel: what lives under the water right in front of you.

The visit is in three zones:

• The Embruns zone, outdoors: an outdoor pool, lichens and the animals of the strip that the tide covers and uncovers.
• The Tides zone: aquariums with sea bream, sea bass, seahorses, lobsters, scallops and abalone.
• The Depths zone: anemones, sponges and gorgonians, rays, small sharks and conger eels, with a 50,000-litre tank.

At the end you climb to the top of the rocks, at the foot of the block called the Père Éternel, with a view over the coast. There is also a permanent exhibition on the Channel, with no live animals, and, until 3 January 2027, a photography exhibition on the lobster.

Hours

The aquarium publishes a calendar by period that changes each year. In 2026:

• 1 to 5 July: Wednesday to Sunday, from 10:00 to 18:00.
• 6 July to 24 August: Monday from 14:00 to 19:00 and Tuesday to Sunday from 10:00 to 19:00.
• 25 August to the end of September: Tuesday to Sunday, from 10:00 to 18:00.
• October: Tuesday to Sunday, from 14:00 to 17:30.
• Winter: open only on some school-holiday afternoons, from 14:00 to 17:30; in December 2026, on 21 to 23 and 26 to 30, and in January 2027 on the 2nd and 3rd.

The ticket office closes an hour before the aquarium. It is also open in spring (in April 2026 there were guided visits), but the calendar for January to June 2027 is not yet published: check it on its website before going.

Prices

• Adult, from age 13: €9.10.
• Ages 12 to 17: €7.40.
• Ages 4 to 11: €6.90.
• Family (2 adults and 2 children, or 1 adult and 3 children): €25.70.

There is a reduced rate for people with reduced mobility, jobseekers, students and anyone presenting a ticket from other partner sites. Guided visits, of 1 h 30, cost €2 more and are only held on specific dates; there are also meetings with the keepers on some days.

How long and with children

Allow around an hour, a little more if you stop on the terrace above. It is a visit designed for small children: short, at their height and in caves, which they like. It is a good plan for a rainy hour or high tide, when the beach does not offer much.

Getting there, parking and accessibility

It is on the boulevard du Coz-Pors, in Trégastel. The car park, next to the aquarium, is free. In summer the Le Macareux shuttle stops at Trégastel.

The terrain is steep and there is an outdoor staircase, but the aquarium has an electric ramp to get up it. If you are with a wheelchair or pushchair, tell the ticket office.

A couple of steps away, the Hôtel de la Mer faces Coz-Pors. If you have the afternoon left, the Cité des Télécoms is the area's other indoor plan.