Warp Jars

Warp Jars are items which appear in The Legend of Zelda: The Wind Waker which allow instantaneous transportation to certain areas of a dungeon, provided that whatever is blocking the jar has been removed. If only one jar has been unblocked, then jumping into it will only make the jar spit you out. If two or more jars have been unblocked, then jumping into one will warp you to the next unblocked jar in the sequence of green, blue and yellow.

Green Fog Warp Jar
The green fog warp jar is the first jar of a dungeon, and is usually found within a couple rooms of the entrance.

Blue Fog Warp Jar
The blue fog warp jar is the second jar of a dungeon and is usually found somewhwere in the middle of the dungeon.

Yellow Fog Warp Jar
The yellow fog warp jar is the last jar of a dungeon and is usually found just outside the boss room.