Dear all, I am looking for some advise on the best way to record cetaceans vocalizations using a hydrophone deployed from a small boat. I heard that a Digital Audio Tape (DAT)Sony TDC-8 a is a good option for recording many species. This model is not available new at the moment because it is discontinued by Sony, but I could get a used one. Considering DAT technology is almost obsolete right now, maybe you can recommend me any digital recorders or other devices that you use to record cetacean vocalizations on the field. I am specially interested in sounds of blue, sperm, humpback, and killer whales and many dolphin species ocurring off Peru, for this reason I would need a recorder with a wide range of frequencies, from 20Hz to 22000Hz, like the Sony model I mentioned above. Thanks in advance, Ignacio Ignacio García-Godos Naveda Unidad de Depredadores Superiores Instituto del Mar del Perú (IMARPE) Esq. Gamarra y Valle s/n, Chucuito, Callao PERU Apdo. 22, Callao, PERU Telf: +511 4297630 Ext. 258 Fax: +511 4200144 Casa/Home: Av. Francisco Mariátegui 129 - Dpto. 403, Jesùs María, Lima 11, PERU Telf: +511 4726850 e-mail: agarcia@imarpe.gob.pe ag_godos@yahoo.com