Polar Bear, and vegetables that replenish health when touched. At first, the stage is completley still; then after time, the whole stage zips down river, making players in the air fall slower than usual. After it comes to rest, the Polar Bear comes and does what he does in the original game: stomps on the ground and the lower part of the stage sinks into the water. If the player is in the water, a giant fish comes and KOs players by swallowing them also crushed. This fish isn't from the Ice Climber game but from the Balloon Fight game which was released for NES too.
The fish in "Summit" came from Balloon Fight on the NES. In the game, when you get to close to the water, the fish will jump out the water and try to eat you. If the fish eat's you, you will lose a life or get a game over.