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And there was at least one cluster of telltale “callosities” on the head, rough and white skin patches.

Marine experts will compare its genetic material and the patches of raised tissue on its head, known as callosities, against a vast library of genetic data from right whales.

They often identify them by the patterns of callosity on their heads, raised tissue colored white by an infestation of cyamids, commonly known as “whale lice”.

They developed a method of identifying individual whales in part by the raised and roughened patches, called callosities, growing in unique patterns on their skin.

Both natural and unnatural markings are useful: propeller scars, but also callosities, patches of rough skin that are white because they are infested with cyamids, licelike parasites.