Data from: Olfaction at depth: cribriform plate size declines with dive depth and duration in aquatic arctoid carnivorans

Deborah Bird, Iman Hamid, Lester Fox-Rosales & Blaire Van Valkenburgh
It is widely accepted that obligate aquatic mammals, specifically toothed whales, rely relatively little on olfaction. There is less agreement about the importance of smell among aquatic mammals with residual ties to land, such as pinnipeds and sea otters. Field observations of marine carnivorans stress their keen use of smell while on land or pack ice. Yet, one dimension of olfactory ecology is often overlooked: while underwater, aquatic carnivorans forage “noseblind,” diving with nares closed,...
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