Studies of Hypanus americanus have shown that they communicate through pheromone signaling. Males communicate with females before copulating by touching and biting the females. Also, after the female gives birth, she releases pheromones that are most likely believed to be produced in her cloaca; one study reported that the birth of offspring attracted males.
Research on Hypanus americanus has demonstrated that they communicate via pheromone signals. Male Hypanus americanus convey messages to females before mating by touching and biting them. Additionally, after the female gives birth, she releases pheromones thought to originate from her cloaca; one study indicated that offspring birth attracted males.