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Narwhal instrumented with satellite, a Crittercam and DTAG tags. A male narwhal (#37232) tagged with a satellite tag (enclosed by the circle), a Crittercam (enclosed by the ellipse) and a DTAG (enclosed by the rectangle) at Kakiak Point in Admiralty Inlet, Canada on 11 August 2004. Photograph courtesy of Rune Dietz.
