Missing Hawaii Humpbacks

FILE - In this Oct. 3, 2009 file photo, boaters and fishermen watch as a group of up to six humpback whales feed on herring near Ketchikan, Alaska. Over the past several years researchers have noticed a decline in the number of North Pacific humpback whales showing up in their traditional breeding grounds around Hawaii. The missing humpbacks migrate each autumn from Alaska, where they feed during the summer months, to Hawaii, where they mate and give birth during the winter. (Tom Miller/Ketchikan Daily News via AP, file)