Brings you the best marine ecotourism experiences in Europe

Opisthobranchs (Sea slugs)

Opistobranchs, and especially the group of the Nudibranchs, include some of the most colourful creatures on earth.

The Opisthobranchs are invertebrate animals (Mollusca-Gastropoda) commonly known as sea slugs. They are characterized by a small or absent shell. Among the best known Opisthobranchs are the nudibranchs, invertebrate animals with spectacular colour. They generally are small (some millimetres long) but larger species can reach 40 cm. Having no mechanical protection, their only defence relies on their camouflage, and on their toxicity, secreted by them or accumulated from their food.

It is possible to find these species all year round in Catalonia, from shallow water to depths of well over 700 m.

Catch a glimpse

Opisthobranchs (Sea slugs)

Experience Europe's marine wildlife

30.00

Benagil & Marinha Caves Boat Tour

Portugal Algarve Portimao
390.00

4-Day Open Water Diver Course

Spain Canary Islands Gran Canaria
91.00

Whale Watching Tour & Snorkeling in São Miguel

Portugal Azores Islands
115.00

Whale & Sea Bird Watching in the Basque Country

Spain Basque Country
1000.00

St James Way By Kayak 5-Day Guided Tour

Spain Galicia Rias Baixas
115.00

Wreck Diving in Ocean Revival Park

Portugal Algarve Portimao
26.00

Paddle Surf and Kayak excursion in Delta del Llobregat

Spain Catalonia Costa Barcelona Delta del Llobregat Natural Park
40.00

Salvora Island Dive in Ria de Arousa

Spain Galicia Rias Baixas Ria de Arousa
420.00

3-day Bike Tour of Ibiza

Spain Balearic Islands Ibiza & Formentera
25.00

Falmouth Area Boat Dive

UK Cornwall Falmouth Area Manacles Reef
40.00

Diving in Portofino's Marine Protected Area

Italy Liguria Genoa Portofino
30.00

Boat Tour to Sisargas Islands

Spain Galicia Costa da Morte Illas Sisargas
45.00

SUP Course in Deba

Spain Basque Country
27.00

Explore the Underwater Treasures of Brijuni National Park

Croatia Istria Brijuni National Park
175.00

Giant's Causeway Sea Kayak

UK Northern Ireland Causeway Coast & Glens Causeway Coast
48.00

Snorkeling Adventure in Tenerife

Spain Canary Islands Tenerife
1550.00

Malt Whisky & Wildlife Cruise

UK Scotland Argyll & Bute
40.00

Game of Thrones Boat Tour to the Flysch

Spain Basque Country
275.00

PADI Scuba Diver Course (2 Days)

Spain Canary Islands Gran Canaria
45.00

Kayaking Excursion to Toro Island

Spain Balearic Islands Majorca