Find Weligon Steelherder in the back room on the ground floor of the Deepwater Knights at -1040.07, -390.45, 51.72
You say, 'hail Weligon Steelherder'
Weligon Steelherder says 'Hail, Runengetum ! This is the Deepwater Temple. Here you shall find the wisdom and courage of Prexus, the Ocean Lord. I am glad to see you have an interest. Forgive me if I cut our conversation short, but I have many [Deepwater tasks] to complete.
You say, 'what deepwater tasks?'
Weligon Steelherder says 'We here at the Deepwater Temple must tend to the [Peacekeeper battlestaff] and the [Deepwater harpoon] as well as other duties such as [ocean protection]. There is always something we must do.
You say, 'what ocean protection?'
Weligon Steelherder says 'In the name of Prexus, we are sworn to protect all ocean creatures. We have heard reports of a shark carrying a deadly malady. We believe she is pregnant. If she delivers her young to the ocean, it will endanger all other creatures. We need to find a young paladin to [hunt the diseased shark].
You say, 'I will hunt the diseased shark'
Weligon Steelherder says 'Ah, yes! Take this bag with you. When you have collected the remains of the diseased shark and no fewer than three of her young in it, combine them in it and return it to me. Then, you shall get your reward.
You get given a 4 slot empty shark bag in which to collect the shark remains. Go into the harbour to find the diseased shark. It is usually either in the main harbour or to the left of the jetty. When you kill the diseased shark, you will be able to loot a Shark Skin from its corpse, and about 6 baby sharks will spawn around the corpse. When you kill the baby sharks, you will be able to loot Baby Shark Remains from their corpses. Combine the Shark Skin with 3 Baby Shark Remains to produce a bag of shark remains . Be very careful what you put in this bag as the the sharks drop other skins that look the same as the correct ones. Give the bag back to Weligon Steelherder for the following response:
Weligon Steelherder says 'Very good, my dear young follower of Prexus. You will learn that swimming is a strong skill among the Deepwater Knights. Keep this up and you may wield a Deepwater harpoon soon enough. For now, you shall wear this barnacle breastplate. It is strong enough to aid a young knight in his quest for perfection.
Your faction standing with DeepwaterKnights got better
Your faction standing with HighCouncilofErudin got better
Your faction standing with Heretics got worse
You gain experience!!
And of course you get given the Barnacle Breastplate . The other quests hinted at in the text are the Weligon Steelherder Pearls of Opus Quest and the Weligon Steelherder Deepwater Harpoon Quest detailed seperately.