Effervefence

"The peculiar physics of Air Island prevent these bubbles from floating away... besides, they are quite content to stick around to serve as this charming fence."

Appearance
The looks like bubbles stuck to rocks and patches of cloud-like material.

Monster Who Like It
The following monsters will have their happiness increased by 25% when near one of these. Click here to view a complete list of all monsters' likes.

Name Origin
The name is a play on "effervescence" - meaning "bubbles in a liquid; fizz" - and fence.