Frozen Oceans

Mobs in recent updates have made land more dangerous, but apart from drowned the oceans can be too bland by comparison. I propose that rather than overload with dangerous ocean mobs, or maybe in conjunction with ocean mobs, add environmental dangers: Swimming in frozen oceans will produce a freezing effect like powdered snow- you need a boat. Maybe maybe update top water currents that move players off course, crude sails required for sailing full speed- but using them could be bad if a wind picks up. Sails could be added to a slot on the boat and be made separately. This adds more depth to traversal and exploration without adding too many creatures and making the game less minecrafty. Also maybe makes the player want to go out and tame Nautilus as it wont be effected by these dangerous additions.