Wrap it Up

I found it was easiest to swim OVER the seaweed and drop straight down in to get it, then hurry up and out of the fatigue zone. Do not try to swim between the electrified seaweed. Too easy to get shocked that way.

All three of these spawns are in fatigue zones, you will probably be able to grab 2 at a maximum before getting back to a safe zone (the third one is quite near the edge of the zone).

They are surrounded by electrified seaweed, don't touch it, it hurts.

For those doing the [item=180034] questline, here are all of the relevant coordinates for those with TomTom and Paste (an addon that allows longer strings to be input)

/way Grizzly Hills 18.47 88.28 - #01 - Pick up Glimmerfin Scale dropped by Glimmerfin Scout on Iceberg, this starts questline
/way Borean Tundra 43.49 13.97 - #02 - Show Glimmerfin Scale to King Mrgl-Mrgl
/way Grizzly Hills 20.00 92.00 - #03 - Collect 10 Meaty Crab Chunks from Scuttleclaws on sea bed
/way Grizzly Hills 17.81 93.21 - #04 - Give Meaty Crab Chunks to Glimmergut down steps in wreck
/way Grizzly Hills 10.38 85.24 - #05 - Kill Horker the seal to loot a Pile of Blubberfat
/way Grizzly Hills 17.81 93.21 - #06 - Give Pile of Blubberfat to Glimmergut down steps in wreck
/way Grizzly Hills 17.06 93.75 - #07 - Deliver Pile of Blubberfat to Glimmerfin Oracle - inside wreck to SW
/way Grizzly Hills 21.50 95.50 - #08 - Collect Giant Peal avoiding elite snake Gem-Eyes - Fatigue zone, use underwater mount
/way Grizzly Hills 17.46 93.02 - #09 - Re-enter wreck from West through hole in base of hull
/way Grizzly Hills 17.06 93.75 - #10 - Deliver Giant Pearl to Glimmerfin Oracle inside wreck
/way Grizzly Hills 21.47 88.72 - #11 - Defeat Trainer Grrglin in a pet battle - Ikky / other flying pets will do it easily
/way Grizzly Hills 17.46 93.02 - #12 - Re-enter wreck from West through hole in base of hull
/way Grizzly Hills 17.06 93.75 - #13 - Hand in Trainer's Test to Glimmerfin Oracle inside wreck
/way Grizzly Hills 12. 73 96.70 - #14 - Bulbous Seaweed Stalk - get into position then drop down - Fatigue zone, use underwater mount
/way Grizzly Hills 11.14 95.02 - #15 - Collect Warm Seaweed Stalk - get into position then drop down - Fatigue zone, use underwater mount
/way Grizzly Hills 8.89 94.29 - #16 - Young Seaweed Stalk - get into position then drop down - Fatigue zone, use underwater mount
/way Grizzly Hills 17.46 93.02 - #17 - Re-enter wreck from West through hole in base of hull
/way Grizzly Hills 17.06 93.75 - #18 - Deliver 3 Stalks to Glimmerfin Oracle inside wreck
/way Grizzly Hills 8.74 91.02 - #19 - Slay Great Mua'kin
/way Grizzly Hills 17.46 93.02 - #20 - Re-enter wreck from West through hole in base of hull
/way Grizzly Hills 17.06 93.75 - #21 - Hand in to Glimmerfin Oracle inside wreck to get Glimr pet