Koala and Curlew are unrelated and possibly pregnant females that have become traveling companions, which is unusual for ...

which appear white because of whale lice (cyamids) covering their otherwise black skin. Each right whale has a unique pattern of callosities that scientists use to identify individual whales ...

They're dark gray or black and have "bumps" called callosities on their head, according to FWC. "The callosities appear white due to the presence of cyamids, or whale lice, that often congregate ...