Photo: What nice teeth you have

Beth Mathews, assistant professor of biology at University of Alaska Southeast, stands in front of a picture of a harbor porpoise and talks about the differences between porpoise and dolphin teeth during a presentation on Monday at the National Oceanic and Atmospheric Administration Auke Bay Lab. NOAA offered a marine naturalist training seminar to commercial whale watching groups so that correct information goes out to tourists throughout the summer. Topics included whales, harbor seals, bears, seabirds, steller sealions, salmon and shore zone intertidal.

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David J. Sheakley / Juneau Empire