Heavywater Perch is a tiny site, little more than a single large rock near the southern end of Pangalley Atoll in the Shackles. The site's sole resident is a beautiful merfolk, Crimson Clepsana, with a tail of an enormous red snapper. She can usually be found sitting atop the rock when the Screaming Reaver is leaving or returning to port. The residents of Fort Benbem stay away from Heavywater Perch for fear of being enchanted by Clepsana's captivating song that lures many unwary sailors to their deaths. Captain Coal-Dark has informed her crew that anyone found staring at the sensuous merfolk while aboard her ship will receive a dozen lashes from her wicked cat-o'-nine-tails. As a precaution, she uses moist kelp to plug her crew's ears. Some of the crew wonder why Coal-Dark fails to simply take care of the seductress herself.