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Which cephalopod species can live in low-salinity bays along the Florida coast?

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A blue-ringed octopus with bright blue rings on its beige body crawls over a rocky, coral-strewn seabed. — cephalopod Blue-ringed octopus (genus *Hapalochlaena*).

The cephalopod species that can inhabit low-salinity bays along the Florida coast is the squid Lolliguncula brevis.1

While cephalopods are generally exclusively marine animals, Lolliguncula brevis is a notable exception that has been reported in brackish water environments where salinity levels can drop as low as 8.5 parts per thousand—approximately one-fourth the salinity of the open ocean.1