Teaches swimming lessons to disadvantaged Plants in his spare time.
Strategies
With
Sea-Shroom is mostly good in early game because in mid or late game there are going to be bigger threats which he can't deal with. This card is mostly used in Citron budget decks. It is the only amphibious mushroom in the game and that can be useful in mushroom decks. The base stats are not useful but it can be buffed with Buff-Shroom or activate Punish-Shroom's ability. A good strategy is to evolve Gloom-Shroom on lane 5 on it so it becomes more difficult to remove. A Lily Pad can do the same job for 1 sun less but without activating the ability. These are the only good things about it however, Sea Shroom is decent for budget but there are better alternatives.
Against
This card isn't much of a threat. However, if it is used to block or destroy a zombie, you can awlays use Rolling Stone, Bungee Plumber, Celestial Custodian or other small removal cards.
Despite being only playable in the water in Plants vs. Zombies, he can be played on land in this game.
This trait is also shared with Cattail and Lily Pad.
In the Behind the Seeds trailer, the lower part of the Sea-Shroom was originally supposed to be submerged in its own pool of water, similar to Octo Zombie and Octo-Pet.