Sea-nut

Sea-nut is a water defensive plant that acts as a shield for the water plants. A Sea-nut is as strong as a Wall-nut plus a Lily Pad.

It is named after the edible seed walnut, specifically the Juglans regia, but a water version.

Powers
The Sea-nut's main power is to gain time by blocking the zombies' path or block the zombies until its eaten, same as Wall-nut, but in water.

If Plant Food is given to it, the Wall-nut will receive a hard armor shell for extra strength.

Trivia

 * The Sea-nut is like a water Wall-nut