Hi all,
    recently IUCN set the status of Mediterranean sperm whales as "Endangered" and not anymore "data deficient". The given (sub)population estimate is 2500 animals. 

To better address our research based on the acoustic detections with underwater platforms I'm willing to know on which studies this estimate has been made. Any information will be appreciated.

Gianni Pavan

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Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
Universitą degli Studi di Pavia
Via Taramelli 24, 27100 Pavia
http://www.unipv.it/cibra
http://mammiferimarini.unipv.it
http://web2.infn.it/smo/index.php