New infusions lower the hopes for underwater mounts

I'm sad to say this because I really wanted underwater mounts but, with the effort they put in making those infusions to increase our underwater movement speed, it's hard they plan to also make underwater mounts who serve for the same purpose. :/

People have been assuming that Anet will even add any more mounts to the game. They were designed specifically for PoF maps with the ability to use them in others. The next expansion will likely have some other gimmick like HoT had gliders and PoF had mounts.

There's always hope, underwater expansion, I'm waiting for you!