Next comes Can't Start a Fire Without a Spark
This allows for the optional quest Nerve Tonic, and the optional Bud Chain:
Oh, the Insanity
Dan, Nunt... Dah, Nunt...
Shark Weak,
Dun-dun-DUN-dun-DUN-dun
A Bone to Pick
Decisions, Decisions
Around this time, kill Gilblin Collectors and hope
Lady La-La's necklace drops for Lady La-La's Medallion. There are conflicting reports of what quests are needed for the item to drop.
This is also a good time to kill Gilblingle for waterlogged journal which starts Blackfin's Booty.
The main chain continues:
Ophidophobia
A Desparate Plea
Undersea Sanctuary
Spelunking
Debriefing
Wake of Destruction
(also unlocks What? What? In My Gut...? and Decompression)
Come Hell or High Water (While in naga camp, pick up How Disarming)
The Warden's Time is auto-given when Come Hell or High Water auto-completes
Across the great Divide leads to the Shimmering Expanse chain.
Don't forget to group up or come back at 85 for
An Opened Can of Whoop Gnash