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The findings highlight the importance of behavioral flexibility in the face of ecological challenges and underscore the need to protect the threatened southern sea otter population, which plays a crucial role in maintaining the balance of coastal ecosystems. Otters that frequently used tools could consume prey up to 35% harder than what non-tool users could access. This was particularly true for female otters, who are smaller than their male counterparts and have a weaker bite force.
The benefits of tool use extended beyond just accessing harder prey. The researchers also found that tool users had significantly less tooth damage than non-tool users. By using tools to crack open shells, otters can avoid the wear and tear on their teeth that comes from constantly biting down on hard surfaces.