CNN —For humans, flashing a smile is an easy way to avoid misunderstanding. And, according to a new study, bottlenose dolphins may use a similar tactic while playing with each other. The study, which was published Wednesday in the journal iScience, found that dolphins make an open-mouthed expression, comparable to a “smile,” during their play. iScience Maglieri et alMuch loved – and anthropomorphized – by humans, dolphins are known for their playfulness, rich social lives, and complex communication with one another. “When dolphins play together, a mix of whistling and visual cues helps them cooperate and achieve goals, a strategy particularly useful during social play when they’re less on guard for predators,” he added.

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Persons: “, ”, Heather Hill, wasn’t, extrapolating, I’m, iScience Maglieri, –, Livio Favaro, Hill Organizations: CNN, St, Mary’s University, Dolphins, “ Dolphins, University of Turin Locations: Italy, France, Rome, Planète Sauvage, San Antonio , Texas