"The callosities appear white due to the presence of cyamids, or whale lice, that often congregate on the callosities," officials said. They can get up to 55 feet long, and an adult can weigh up ...

Each whale has a unique pattern of callosities on its head and around its eyes, which are white or cream due to infestation with whale lice. The shallow waters off the Valdés Peninsula in Argentina ...