Whales will roll around in sandy, shallow bay areas to remove dead skin cells and barnacles, a new study from Griffith University found.
were seen “performing full and side rolls” in water that was up to 160 feet deep and lined with fine sand or rubble, according to Griffith University.
The video was captured between August 2021 and October 2022 during the whales’ southern migration to cooler waters. “On all occasions of sand rolling, the whales were observed on video to be slowly moving forward with their head first into the sand followed by rolling to one side or a full roll,” said marine ecologist Dr. Olaf Meynecke.
Meynecke added that researchers most commonly saw the whales’ sand rolling in the context of socializing, such as following courtship or competition. Griffith University/Dr. Olaf Meynecke via StoryfulGriffith University/Dr. Olaf Meynecke via StoryfulGriffith University/Dr. Olaf Meynecke via StoryfulGriffith University/Dr. Olaf Meynecke via Storyful
Whales can remove some dead skin and barnacles through surface activity such as breaching, according to Meynecke, but sand rolling also plays an integral role – especially in removing barnacles. Skin from the whales was observed to be falling off during the process of all identified rolls, the university said, and some smaller fish were even seen feeding from the whales’ skin.
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