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.

Book now and get – 10%


Both Tethys’ long term projects, in Greece and in the Ligurian Sea Sanctuary, are open to the participation of paying volunteers. Anyone can participate; no previous experience is required. Book before January 6th and get a 10% discount


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Befriend a sperm whale

xmas whale

It’s a great present to someone you love – and you’ll support  research and conservation of cetaceans. Choose between one of the sperm whales of the Sanctuary.


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Best X’mas gift ever!

Xmas whale expedition

Offer a week among whales and dolphins and get 10% discount. The lucky ones receiving the present will be able to  choose their dates and their destination.

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Best wishes from Tethys


Watch Tethys’ special X’MAS VIDEO wishing all our volunteers, supporters, researchers, friends  Merry Christmas and happy New Year.  Thank you all for supporting cetacean conservation!

watch video→

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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New paper from the IDP

Thursday November 20th, 2014

The population of bottlenose dolphins (Tursiops truncatus) in the Gulf of Ambracia  in Greece, has been studied by researchers from Tethys’ Ionian Dolphin Project (IDP) since 2001. In this area.. read more

Tethys’ megafauna in London, 18 November

Thursday November 13th, 2014

The new travelling exhibition of big-animal protraits called Megafauna will be at London Sealife Centre’s Ocean of Stars event; in aid of Tethys, it features the work of underwater photographers.. read more

(Italiano) Segnata da un’elica…ma viva dopo 4 anni

Monday November 10th, 2014

Sorry, this entry is only available in Italiano.