Litrojia 
[@Dragonpone](/images/3275879#comment_10787904)
Izzy here has hooves instead of flippers like the G4 seaponies so we can just make a new tag for G5 seaponies! (kidding, probably)
Honestly just keep it "seapony (g4)" because this is a blip on the radar compared to the seaponies in G4. Maybe change it if they're regularly incorporated into TYT, but that's probably not gonna happen.
edit: apparently the G4 ponies TF'd into seaponies actually keep their hooves. The more you know
Izzy here has hooves instead of flippers like the G4 seaponies so we can just make a new tag for G5 seaponies! (kidding, probably)
Honestly just keep it "seapony (g4)" because this is a blip on the radar compared to the seaponies in G4. Maybe change it if they're regularly incorporated into TYT, but that's probably not gonna happen.
edit: apparently the G4 ponies TF'd into seaponies actually keep their hooves. The more you know