The male and female humpback whales were spotted the same day in different places, and their deaths did not appear related, NOAA said.
An orca group broke the rudder and pierced the hull of a boat near southern Spain, adding to dozens of similar incidents this year.
Experts say the phenomenon may have started after a female killer whale had a traumatic encounter with a vessel at sea.
Scientists found humpback whales appreciate a good exfoliation as much as the rest of us.
The killer whale, also known as Tokitae, has lived in a tank at the Miami Seaquarium for decades. Now she might be headed to a sanctuary in waters where her family still swims.
The GOP says the fledgling offshore wind industry is killing whales — but they have no evidence to back up their claims.
Animal advocacy groups mourned Kiska, who lived almost her entire life in captivity.
Environmentalists warn that the measure, which blocks stricter rules meant to protect right whales, could doom the species.
Rescuers say that nearly 400 pilot whales have died in Australia’s biggest stranding on record. The reason for the stranding remains unknown.
During a deep dive, scientists were amazed after they came across octopuses feeding on a dead whale carcass.