looks like a little bag....
1) 1495, -1210 (underwater). Straight out infront of Gazoon Noihzog
2) +400, +945 (underwater) Best way to explain this .. it to go to the NW corner of the island u port in on and swim west .. toward the other island ... its between both islands
3) +108,-891 (on land) island with the merchants ... standing on the dock ... next to Ellen Daleson facing SW ..looking down u see 3 bushes it is on the ground next to the farthest of the 3 bushes .. on the dock side
didnt bother looking for the 4th