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Seatrekking en mer, snorkeling along the coast wih a waterproof bag

What is Seatrekking?

Seatrekking is a new eco-citizen outdoor activity, which consists of traveling along the coastline, swimming, snorkeling in the sea and hiking on land independently for several days. The nights are spent in a bivouac on the coast or on a sailboat.

Deep Nature Immersion

Seatrekkers experience and gain a holistic view of the marine coastline, in full harmony with the elements. This immersion creates a deep understanding of the marine environment, its uniqueness and fragility, and inspires a personal commitment to its protection. 

Seatrekker at sea
Seatrekker walking along the coast


  • Rediscover the sea-land connection in a truly new way

  • Improve natural well-being and health through various physical activities

  • Improve personal development and awareness

  • To develop a new balance between man and nature

  • To encourage the development of sustainable products and new solutions

  • Create authentic human bonds, unique for team building

  • To have an overall positive transformative effect

Seatrekker en mer


Along the coast over several days


Swimming, snorkeling, freediving and trekking from 2 to 10 km per day; usually between 2 and 3 days but can also be practiced over longer periods depending on different parameters such as the experience of the group, the weather and conditions at sea, the temperature and currents.

For Discovery Days: A one-day experience. The course takes place around a beach or a coastline over a distance of 1 to 2 km, depending on the group.

En apnée


Camping sur la côte


Discover the underwater world

Snorkeling and Freediving are essential components of Seatrekking to discover the big blue! The dives are done at shallow depths, usually between 1 and 15 meters, but depending on the experience and the level of practice of the Seatrekker, they can also reach more.


For Discovery Days: usually between 3 and 6 meters

At the rhythm of nature

The Seatrekkers spend the nights in the wilderness according to the rules of wilderness bivouac, respecting the practice of "Leave No Trace" and the regulations in force. The team rests on durable surfaces, without leaving any traces, on beaches, in caves, on plateaus, in mountains or in forests.


For Discovery Days: without overnights 

Seatrekker sur la cote au Bretagne


The Mediterranean Sea is perfect for Seatrekking, especially in the quiet bays and around the small islands.


Islands are particularly suitable because of the diversity of their landscapes and the possibility to change coast when the weather and currents are not favorable. 


Watch The Sea has organized trips to France, Malta and Greece. Currently, we are focusing on the trails of southern France and Brittany.





The second region in which Watch The Sea regularly organizes expeditions is the Atlantic coast of Brittany, such as Ushant Island, Douarnenez Bay or Crozon Peninsula.


The rugged landscape and cooler Atlantic waters with sometimes stronger waves require experience and fitness. Depending on the visibility, the courses often favor surface swimming over snorkeling and freediving.

Abroad, seatrekking is practiced in Europe in Croatia, Germany, Italy and Spain but also in Australia and in Asia like Japan, Thailand and Sri Lanka until now.


The lakes of Germany, Austria and Switzerland have also been identified as great and diverse places for seatrekking, when the temperatures and visibility under water are suitable



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To be in harmony with nature and harm it as little as possible, Seatrekkers follow  principles that make the adventure more sustainable.

1. Reduce yourself 

Travel with minimalistic means, light luggage and take only what is really essential.


3. Hide &See

Seatrekkers do not want to attract unnecessary attention and do not want to disturb the balance and tranquility of the environment in the water as well as on land. Only in this way is it possible to get close to animals, to pause and observe the moment.

5. Travel in small groups

The smaller Seatrekking groups are, the more inconspicuous they can be in the environment and the trip is also less stressful and easier. 5 people or less is optimal.

2. Leave no trace 

Leave no trace where you move. From trash, to fire pits, to choosing your mode of transportation to the trail area to reduce your carbon footprint.

4. Respect nature & animals 

Respect nature, which is already under full pressure from mankind, leave it as you found it and do not harm any animal.


6. Learning from the animals

Observe and learn from animals who are perfectly adapted to their natural habitats. Especially in the water, we can opt for flowing, energy-saving movements or simply have fun and be inspired by experts like sea lions, dolphins and otters.


deux Seatrekker dans l'eau avec equipment


What you need on a Seatrekking trail

Minimizing and living with less is an important experience during Seatrekking.


We only carry one waterproof backpack with all the necessary equipment.

  • The equipment contains snorkeling and hiking gear, water and food as well as sleeping and safety devices.


  • For water trails, the bag is inflated and attached to an elastic Seatrekking leash at the ankle of the Seatrekker which makes it float effortlessly behind. The leash has a length of approx. 7 m which allows deep dives of up to 15 meters.

For Discovery Days:
Watch The Sea provides the necessary equipment for groups of up to 24 people.

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