Shoal

From KeenWiki

Shoal is the sixteenth level in The Keys of Krodacia. This level is very different than all the levels before it due to the fact the level is underwater. The last level Reef is also an underwater level. Instead of his trusty Pogo stick and his Neural Stunner, Keen is wearing his Wetsuit in order to breathe and swim underwater to collect points and find another key to the Universal Toaster Canon. His quest will not be necessarily easy because Squiddly eats points throughout the level and Ogobogo patrols the seas looking for 8-year-old heroes to eat. This is the only level where the Blue Worm appears.