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.

Join us at sea

San Remo

Both Tethys’ long term projects, IDP in beautiful Greece and CSR in the Ligurian Sea Sanctuary, are citizen science based and will be open to the participation of paying volunteers. Anyone can participate; no previous experience is required.

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Guess who’s been resighted…


Henry, Gaby, Luke, Noni, Fede, Matt: have you befriended one of our whales? Here’s last season’s update on the sperm whales of the Pelagos Sanctuary. (And… you can still befriend one or offer his “friendship” as a X’mas gift!)


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An expedition as a gift

box regalo spedizione copia

Offer a week among whales and dolphins to someone you love. The lucky ones receiving the present will be able to freely choose their dates and their destination (Greece or Ligurian Sea)

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Next season’s dates available

stella 2015

New teams in the Ligurian sea and in Greece will start in May and go on until September. New dates are on line.

CSR (Ligurian Sea)→


IDP (Greece)→

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.