The pelagornis can be very useful for helping get players or dinos across piranha infested waters. Since they do 10X more damage to piranhas, coels, and salmon, they can be used to clear out swarms of them in rivers or swamps. You can then safely cross the water without needing to worry about piranhas killing your friends or dinos. Make sure to be aware of other dangers in the water such as sarcos, spinos or megalodon.
If you hate when your flyer dismounts becuase of it in water well this will fix it it can land and float on water and it doesn't dismount you at all very useful for pvp if your about to go underwater. Becuase a giant squid I cant spell the squids name tho anyways.