Template:Monster InfoBoxThe Shellmouth, also sometimes known as Ocean Guardians, are hostile creatures that can be found in the Frontier. They are often compared to a Whapper and the Forest Guardian. They are usually seen at Coral Bay. They also appear in the Otherworld Tower.

In appearance, it is a hulking hunchback-like creature that patrols a specific zone. It wields a fallen tree, just like the Forest Guardian. Its main colors are grey, pale, and blue. It has a perplexed expression as implied by its drop, Perplexed Shellmouth.

There is one known attack that the Ocean Guardian will unleash upon the players. The guardian will swing its weapon, attempting to land a hit on the player.

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