[Achievement:AOM] Island Hopping

PHANTOM SEA
Southeast Isle (Dinos - South Dshinn)
1) Flour Sacks -1406, 9, 924 (near Corrith Midner)
2) A large seashell -1087, 93, 918 (Gazanti)
3) A pterodon nest -726, 176, 1214 (west side of Dshinn Peak)
4) A bowl of half-eaten bones -1188, 71, 833 (a hut just outside the lizardman village)

West Isle (Highpass - Kithicor Isle)
1) Empty dreadkeep supply chest at 774, 69, 1348 (Dreadkeep)
2) Broken barrel at 241, 61, 912
3) A grinding wheel 516, 351, 61 (forge area of Castle Highhold)
4) An oar at 869, 10, 785 (Ghorkaal)

Northeast Isle (Ssra - Grim Shales)
1) A pile of rubble at -321, 49, -921
2) A ruined pillar -646, 8, -754

TRANQUIL SEA
Southwest Isle (Isle of Refuge)
1) Wagon wheel at 1083, 6, 1078 (the D.I.R.T.Y Dig)
2) A chunk of wall 819, 3, 1190 (Razortooth Bay)
3) A gravestone 615, 22, 1167
4) wheel in The Crow's Nest 721, 48, 994

Northwest Isle (Brokenskull - Death Weave Isle)
1) An empty far seas crate 1079, 7, -524 (landing area)
2) An urzarach web sac 1005, 24, -953 (Gorir)

Northeast Isle (Zavith'loa)
1) A pygmy meat basket -670, 7, 263 (Bawgava)
2) A deinodon vertibrae -1267, 80, -732 (Zavith'loa zone in)
3) Tar covered bone -851, 35, 245 (Tar Pits of Inevitability)
4) Moss covered stone -1416, 62, -345

Not sure if I got the location right of your #20 Canth but I copied your list so no one have to move around the posts to see all of them. Correct me if I get this wrong.