Lobsters have urine-release nozzles right under their eyes. They urinate in each other's faces as a way of communicating, either when fighting or mating.
Day’s Crabmeat & Lobster, Tiny Fox Lab

Lobsters have urine-release nozzles right under their eyes. They urinate in each other’s faces as a way of communicating, either when fighting or mating. – Tiny Fox Lab Facts

Preview photo credit: Day’s Crabmeat & Lobster
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