Moonshell Claws

After 6.2 the Shipyard phasing is an issue. Most of the mobs phase out when you get near them but I managed to finish the quest. There is a group of three next to the Shipyard. Attack them from range and then use a [item=60854] or the [spell=126746] if you're a hunter. Submitted a bug report so hopefully they'll do something about it soon.

[edit] While doing the next part of the questline, I've been watching a bunch of lvl 90 players discoing in and out of my phase and running through the air. It looks like this quest might be easily completed before the Shipyard is put in after tier 3 of the Garrison is started... not much help though if you're on the quest and reading this... :\

This might sound obvious, but you better walk around the boat on the ground than swimming in the water, even if you see someone coming back from water.

As a reflex I went by the water because I saw people coming back from it, but they were on other parts of the quest chain.

There are 2-3 crawlers at the left side of your shipyard. Stay phased in you shipyard to be able to loot them.