No kidding. I love whales. I had an interesting encounter with a wild gray in California once. The account is in my book. I would see them in Oregon. You can tell them by their exhalations if you can't see the whole animal.
For the record, I am vehemently opposed to the Navy's sonar testing.
Anyway - here's how scientists are gather information on their health:
http://www.newscientist.com/article/dn16017-thar-she-blows-snot-offers-clues-to-whale-health.html?DCMP=NLC-nletter&nsref=dn16017
The article comes from New Scientist.
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