Nation & World

In this undated photo provided by the Whale and Dolphin Conservation a humpback whale bears injuries and wounds consistent with vessel strikes. A new study in the journal Marine Mammal Science said whale ship strikes might be more common than previously suspected sighting almost 15 percent of humpback whales are injured by ships strikes. (Skyler Suhrer/Whale and Dolphin Conservation via AP)

“Vessel strikes are a significant risk to both whales and to boaters,” said Alex Hill, the lead author of the study, who is a scientist with conservation group Whale and Dolphin Conservation, in Plymouth, Massachusetts. “Long term studies can help us figure out if our outreach programs to boaters are effective, what kind of management actions are needed and help to assess the health of the population.”