\n<\/div> \n\n**Thessal the Mermaid Goddess** is the boss of the [Ocean Trench](\/wiki\/ocean-trench). The boss room has 4 air sources, that are each protected by a respawning Deep Sea Beast. If you are low HP, try to stay away from these as long as possible. Thessal will throw coral bombs that explode and split into 5 more bombs that explode to inflict more damage as well as possibly lethal Pet Stasis for *8 seconds*, heavily reducing survivability. This, combined with her armor breaking attacks, can make this fight a painful one. \n\n{{template-realm-eye-lore\n| response=Thessal is the ruler of the realm beneath the waves, but her kind had struggled to survive since mortals became capable of naval combat.
Her contact with the surface world is limited, but when Oryx came to her with a treaty for mutual protection, she agreed out of desperation.
With Thessal's dominion over sea monsters and Oryx's strengthening magic, the duo created the Hermit God to stop ships from ever setting sail again.\n}}\n \n