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

Tethys has contributed since 1986 to marine conservation, at national and international levels, through the provision of scientific knowledge.

The Institute has been investigating the ecology of marine species,

most notably whales and dolphins, in research campaigns involving paying volunteers,

that are among the earliest citizen science projects in the Mediterranean.

Expeditions to start in May


Both Tethys’ ongoing long term projects - CSR in the Ligurian sea and IDP in Greece – are citizen science projects. 2015 teams will go on until the end of September. Anyone can participate.


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Befriend a sperm 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  present ever!

regala- spedizione-tethys

Offer a week among whales and dolphins to someone you love. The lucky ones receiving it  will be able to  choose their dates and their destination.

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Dolphins in Greece


Join the Ionian Dolphin Project and help us to ensure the long-term viability of dolphins species living in coastal waters of the wonderful eastern Ionian Sea




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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Recent updates

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(Italiano) Liberi e selvaggi: venerdi 8 maggio balene a Bolzano

Tuesday May 5th, 2015

Nell’ambito della mostra “Liberi e selvaggi”, Maddalena Jahoda, ricercatrice e communication manager dell’Istituto Tethys, terrà un incontro con il pubblico sui “misteri” dei cetacei del Mediterraneo questo venerdi sera presso il.. read more

Cetacean Photo Exhibition at the Oceanographic Museum of Monaco

Monday April 27th, 2015

Formally launched last week (on tuesday 21st) by His Highness Prince Albert II of Monaco, the Cetacean Photo Exhibition organized by ACCOBAMS (Agreement on the Conservation of Cetaceans in the.. read more

(Italiano) Un libro per scoprire mare e terra con il piccolo delfino, il 5 maggio a Santa Margherita

Tuesday April 21st, 2015

Arion è un tursiope curioso che, una notte di inizio estate, assiste a un fatto incredibile che potrebbe cambiare il futuro dell’intero territorio in cui vive. Il  giovane Delfino, per.. read more