Note: If you do not get updated examine the journal again, or try to use the Hooked Gardening Tool in your appearance slot. Examine the Journal while in the Aurelian Coast.
Note: They look like large shells. Not guaranteed updates (you will often receive "a broken object", not the "mysterious object" you are looking for)
Note: Use tab and shift-tab targeting to more easily find the item. They can be tracked with Track Harvestables.
Note: The skeletons in the area are hostile, but they have very short aggro ranges, so with patience and care, even lower level characters should be able to gather the items. (many of them don't see invis)