Half-sea elf:

The children of aquatic elves and land-bound humans feel the disparity between their heritages more than any other. These half-elves show their parentage on their faces, with sandy, russet, or green-black skin to match their elven parent. Slightly webbed fingers and toes aid in swimming, but their neck slits almost never function as gills. A few aquatic half-elves can breathe underwater and live with their elven parents, but far more shoreborn live on land, feeling a constant call to the water. Many find work as sailors. Fishing vessels and merchant ships often have shoreborn deckhands and first mates, and a crew made up solely of aquatic half-elves sails an infamous pirate ship known as the Shoreline Scourge.