The Water Elemental is the second boss you will face and its element is Water. Its weakness is Air, and it is strong against Fire. You can face it in the Thieves Cove and at the Summoning Stone. If you beat it 10 times, you will get the achievement Warrior of Tides.
Water Elemental[]
Element: Water
Max health: 97
Drops: Chunks of Coral
Exp: 86
Seafoam armor
Summon cost: 5 Gems
Collect 4 chunks of coral to craft Seafoam Armor