Languages

Common: Common originates as the native language of the merfolk and is used as the accepted trade language of the Cerulean Seas. It uses high pitched sounds and clicks. Its written form is comprised of an alphabet of 52 different symbols and signs.
Cephalite*: The native language of the squibbon and some of the more intelligent varieties of octopus and squid. It uses multiple limbs, rapid skin flushes and color patterns, and posturing. There is no written form of Cephalite, although simple one- word meanings can be conveyed with swirling diagrams.
Ceti*: The language of dolphins and whales, including delphins. Very similar to common, but extends into the subsonic and ultrasonic range (outside of normal hearing range). Ceti has no written form.
Clackin’: is the native tongue of Pholae, and is comprised entirely of clicking sounds. Surprisingly, it does have a written form that looks very similar to Morse code. Non Pholae species require special tools in order to be able to 'speak' this language.
Delatari: The lilting language of the sea elves. Delatari is a pleasant mixture of the ancient language of the surface elves and Aquan. Its written form is often portrayed in a beautiful calligraphy form, and is made up of a 24 letter alphabet.
Gesh-par: The language of the Mo-gesh, consisting of sibilant sounds paired with popping and grunts. Some have compared it to the likeness of simultaneously hissing like a snake and croaking like a frog.
Pelagic*: The natural language of sharks and rays. While it can only convey simple concepts, both ixarcs and carchardians often use it to communicate secretly. However, its most useful application is to control a remora imp. Pelagic is based on scent and pheromones. It has no written form.
Qhwel*: Unspoken language used by the Qhonian. Conversations can be held by lighting their bioluminescent body parts in specific patterns. Light levels must be sufficiently dim for this to work.

The languages listed below are the same as the core Pathfinder versions. If a language is not listed above or below then it is not in use in this world.
Aboleth, Abyssal, Aklo, Aquan, Auran, Celestial, Draconic, Druidic, Infernal, and Terran.