Froghemoth: D&D Collector's Series Classic Miniature - Rules of Play says:

Bursting from the pages of the classic adventure, Expedition to the Barrier Peaks, the froghemoth is ready to make a meal of any adventurers unfortunate enough to cross its path. Don't let its bizarre appearance fool you. A hungry froghemoth is a deadly foe indeed. Lying submerged in swamp water, it leaps to entrap its prey with its tentacles and stuff them in its maw.