I think we should have more underwater stuff to do. I built a way to get to the bottom of the sea floor recently and it's really cool, but their should be more stuff to do underwater. here are my suggestions
1. craftable scuba gear that goes on your armor slot
2. a few more fish besides just the squid. small crab, some box looking fish underwater
3. the ability to collect seaweed or other stuff to craft special things, maby a special block
4. seaweed on blocks deep underwater
anyway i think this would be a good adition to the game
P.S if you have glass underwater and you look out it it's like theirs no water their, i hope this gets changed to make it look like your underwater
1. craftable scuba gear that goes on your armor slot
2. a few more fish besides just the squid. small crab, some box looking fish underwater
3. the ability to collect seaweed or other stuff to craft special things, maby a special block
4. seaweed on blocks deep underwater
anyway i think this would be a good adition to the game
P.S if you have glass underwater and you look out it it's like theirs no water their, i hope this gets changed to make it look like your underwater
http://notch.tumblr.com/post/3095374159/notch-is-still-out-of-the-building
it may be old but gives me hope
Dr.Zhark's Mo'Creatures
Dolphins
Pirhannas
Sharks
Fish
http://www.minecraftforum.net/topic/468658-an-improvement-to-the-ocean/
Mostly moved on. May check back a few times a year.