Recently I saw many BearGrylls and E.Stafford's survival videos,then the new idea struck me.
They once survival through the Mangrove,which is thought the worst environment for mankind to survival.They overcame many difficulties and came out finally.
Oh!It must be extremely interesting if there is Mangrove in Minecraft!The Mangrove is very large,while trees there are huge and have great root systems.Crocodiles live under water and They may bite you when you're swimming in the water.While killing them they will dorp leather,meat and so on. Their pace is twice faster than players.They can also have a high attack skill which makes them very dangerous.I think they may have a damage as drowns with tridents do;)
Wish you take a consideration on the idea.I would appreciate it if you pass the idea.:)