A non-profit organisation for the study and the conservation of the marine environment

Tethys is conducting internationally qualified scientific research aimed at the conservation of whales and dolphins since 1986.

The institute has been promoting the first citizen science projects on Mediterranean

cetaceans and offers not just whale watching, but exciting field courses for paying volunteers

wishing to help researchers at sea.

Two projects available for participation in 2014new

idp-170-new copia In addition to the CSR research cruises in the Ligurian Sea, this year the second project, the IDP, located in Greece and based on trips on an inflatable craft, will be open to participants directly through Tethys. Read More →

An expedition as a present

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Offer a week among whales and dolphins to someone you love! Read more →


Dona il 5×1000 (Italia)



More (italian)  →

Last minute offer!


Two 1-week volunteer teams at Ionian Dolphin Project in Greece, starting April 27th and May 4th, respectively, have still a few spaces available at a very special last-minute fee: 600 Euro instead of 750. If interested please send a mail as soon as possible to tethys@tethys.org Read more →

Wildlife photography workshop


Canon experts and Tethys researchers will be teaching how to picture whales and dolphins in the field during two extraordinary workshops (basic and advanced)  scheduled in June in the Ligurian Sea. Official language is italian. Read more (Italian)→

Tethys' Projects

A series of best pictures regarding Tethys' ongoing long term research projects conducted in the Mediterranean which you can join: CSR in the Pelagos Sanctuary, Ligurian Sea on board the RV "Pelagos", and IDP in the coastal waters of Greece.

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Tethys' Blog

Recent updates

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Beaked whale stranding in Greece: a tragic update

Thursday April 10th, 2014

The mass stranding of Cuvier’s beaked whales (Ziphius cavirostris) which occured in SE Crete, starting April 1st, revealed one more sad news: the female found dead on  3/4/2014 at Kastri, Heraklion Crete,.. read more

More stranded beaked whales in Greece during military sonar exercise

Monday April 7th, 2014

A few days ago we reported an atypical mass stranding of Cuvier’s beaked whales (Ziphius cavirostris) in Greece concurrently to military sonar exercise. Unfortunately there are some more bad news… read more

Tethys field expeditions 2014 are about to start in the Ligurian sea and in Greece

Thursday April 3rd, 2014

For those wishing to participate in our research expeditions Tethys Research Institute, offers two destinations to choose from: the Ionian Dolphin Project (IDO), focused on coastal dolphins inhabiting the beautiful Ionian Greece, providing.. read more