Leeches for the Island 2 quest are found on land, not in the water

The leech-collection quest makes it tempting to search the water, but leeches are small ground pickups near the quest area. Lower the camera and check vegetation, structures, and paths instead of the shoreline. Some players have also reported the full count not spawning at once, so if you're clearly stuck below five, it may be a spawn issue rather than a search problem.