Disaster in the Underwake
“From the waist up, merfolk bear the torsos of well-built humans and delicate features reminiscent of elves and other humanoids tied to the natural world. A merfolk’s lower body consists of the fins and tail of a great fish. Depending on the region, the scales of merfolk vary in hue, including gleaming silver, pale green, or even blue with stripes of yellow and crimson. Merfolk typically measure 6 to 8 feet in length and weigh over 200 pounds, with females being slightly smaller than males. Although amphibious, merfolk move only with difficulty on land and rarely wander more than a mile from sea.
It is quite rare for a merfolk to make contact with a creature not of its kind. In fact, many go to great lengths to steer sailors away from their lands, even resorting to violence if necessary. Ancient accounts hint at merfolk protecting a terrible secret bound to the depths, and though no reports mention what this secret is, the lengths merfolk go to remain isolated from other races highlight the importance of this safeguard."