User blog comment:Lord Loss/Discussion of the Week: Swimming/@comment-4212769-20130121134014

Underwater is really great, a change of the usual fighting style and a good challenge. I always liked it. I'm a bit disappointed though that there are so few monsters that live (and fight) underwater. (Also I think you should add Plesioth.)

Deserted Island: I really liked it. The free ocean of Area 10, The cave-like rock formations in Area 11, the underwater entrance to Area 12. Very well made! I love to fight Lagiacrus here.

Flooded Forest: I actually loved the turbidity of the Flooded Forest. Makes it look very realistic for a river in a jungle-like area. Gobul is a very good monster here. I'm very excited about Plesioth here.

Mountain Peaks: Very pity that there isn't an underwater area. The pond in Area 7 really screams for jumping in. Having White Lagiacrus here would be pretty cool I find. Maybe with an extra area where he sleeps only accessable through swimmin there.

Underwater Ruin: Can't wait to fight Lagiacrus Rare Species here. Also Ceadeus was always fun here as well. I'm looking forward to fight him again along with his subspecies online (only subspecies). :P

Future: I want it to come back because it's a very good idea, a different feeling with fights. It would be a pity, if this feeling goes to waste.

Other Areas: I have to agree, most MHFU areas would be great for underwater feature. The lake in the Old Desert Area 5 for example, Snowy Mountains, the Jungles, in the Swamps there could be some ponds you can swim in. And that would increase the possible monsters that could be added.

As new area I would want to have one that has more underwater areas than the Flooded Forest, with only few land areas. That would pave the way for only aquatic monsters that don't come to land and aren't that big as Ceadeus and it would help better fish monsters to become reality.