Scientists Suggest Climate Change as Cause of Malnourished Gray Whales

Tom Fudge: Grey whales are among the many animals that capture our imaginations in San Diego. Every year, they swim past our coastline twice -- once on their way to calve in the bays of Baja California, and then on their way to feed off the coast of Alaska. Now their headed back to their feeding grounds.

The grey whale was brought back from the brink of extinction, after being hunted for many years. But some marine biologists are starting to get concerned about them again. Some whales are showing signs of malnutrition, something that may be related to global warming.

Guests

• Rob Davis , reporter for voiceofsandiego.org .
• Steven Swartz, Phd. , fisheries biologist with the National Marine Fisheries Service. He specializes in endangered species and he's monitored Grey Whale calving grounds off the Mexican coast for several decades.
• Wayne Perriman, Phd. , head of the photogrammetery and life history for the protected resources of the Southwest Fisheries Science Center, which is part of the National Marine Fisheries Service.

(Video courtesy voiceofsandiego.org )