Deadliest Catch

Deadliest Catch is a master quest that was released on 7 June 2011. The quest was first announced in the Guaranteed Content Poll: What’s My Name? which allowed players to vote on a name for the massive fish, Thalassus, featured in the quest.

Starting out
Jones, a seasoned fisherman, seeks to obtain glory by capturing Thalassus, a legendary sea monster. Jones is located outside of the bank in the Fishing Guild, hoping to find an experienced fisherman willing to aid him. After speaking with Jones, he will reveal that he needs your help to enlist a rower, obtain a sea chart of the area, and forge a giant harpoon that is capable of bringing Thalassus down. He will give you some harpoon plans.

Sea chart
Jones recommends pickpocketing the master fisher to procure the sea chart as he may not be willing to part with the chart. Successfully pickpocketing the master fisher may take a few attempts.

Giant harpoon
After successfully pickpocketing the master fisher, speak to him about finding a master smith. He mentions that Linza, a nearby smith who is working on a few projects for local fisherman, might be able to help.

Linza may be found in the small town of Hemenster, located north and slightly east of the Fishing Guild. Speak to her about making a harpoon, and her interest will be piqued when you mention Thalassus. She will agree to make a giant harpoon for you if you are able to secure one of Thalassus's teeth for her.



Rower
To recruit a rower for the endeavour, head to the Tower of Life, located southeast of Ardougne. Use of the Ardougne cloak to teleport to the monastary south of Ardougne is highly recommended.

Speak to 'The Guns', Jones's cousin who may be found lifting a log just outside of the tower. He claims that he would be more than willing to assist with the endeavour, but his seasickness prevents him from travelling out to sea. However, he mentions that his cousin usually made him a sea legs potion whenever they went fishing.

To make a sea legs potion, lowland heather must be combined with builder's tea, which is obtained from Bonafido, another builder who is located in the vicinity. There are patches of lowland heather surrounding the Tower of Life. Searching the patch that is not infected will add some heather to your inventory; trying to search any other patch will tell you that the patch is infested with aphids. After picking out an uninfected patch, ask Bonafido for some of his builder's tea. Use the tea he hands you with the lowland heather to concoct the sea legs potion for 'The Guns'.

Return to 'The Guns' and hand him the newly-brewed potion. Satisfied, he will offer to return you back to the Fishing Guild to meet with Jones.

At sea
After returning to the Fishing Guild and speaking with Jones, he will take the party out to sea. The small vessel will arrive at the wreckage, and certain wrecks must be investigated to reveal parts of Thalassus's trail. This process is identical to the method of tracking various animals in Hunter.

5 mistakes are allowed when investigating the trail. Should you investigate the wrong wreck 5 times, the trail will reset, but the correct solution will remain the same. In addition to the option to investigate the ship wrecks, various items may be looted from damaged ships.

After completing the trail to uncover Thalassus, the monster will surface, knock you and Jones overboard, and swallow Jones. After washing up onto the shore of a small island, three mermaids will mock the expedition and reveal their loyalty to Thalassus. The mermaids are rather confident and must be convinced that Jones, with his giant harpoon, poses a great danger to Thalassus now that he rests in the belly of the monster.



To diminish the confidence of the mermaids, the following dialogue options must be chosen: Choosing a different option from the ones listed above will reset the mermaids' confidence and require you to start the dialogue over.
 * 1) The Thalassus has eaten Jones the mighty fisherman.
 * 2) It should, he's been hunting for decades.
 * 3) Very horrid! After he's killed the Thalassus, he'll probably come after you.
 * 4) Trust me, I'm a great adventurer, I should know.
 * 5) Did I mention Jones has a harpoon with him?
 * 6) It's no ordinary harpoon.

Return to sea
After instilling fear into the mermaids, they will insist on tracking Thalassus down once more in order to force Jones from the beast's bowels. Upon arriving on the boat, it is necessary to track the creature a second time.

When tracking Thalassus the second time, the track uncovered is different from before, but the concept is identical. At the end of the trail, Thalassus will once again surface from the depths, and 'The Guns' will throw karambwan at the monster. Upon eating the karambwan, Thalassus will sick up and expel Jones back onto the boat. On instruction, 'The Guns' will make a break for land.

Note: There is a chance of looting an additional 3 items while hunting Thalassus for the second time.

Finishing up
Back at the Fishing Guild, Jones will reveal that he managed to snag a tooth from the beast. Head back to Hemenster and deliver the tooth to Linza. Return to the Fishing Guild one last time and talk to Jones. Quest complete.

Rewards



 * 1 quest point
 * 70,000 Fishing experience
 * 26,000 Hunter experience
 * 8,000 Thieving experience
 * New bank deposit boxes in the following locations:
 * South-east of Piscatoris
 * At the Elf Camp Agility log shortcut
 * On the south coast of Ape Atoll
 * North-west corner of Bedabin Camp
 * North-east corner of Pollnivneach
 * South of Brimhaven near the musician
 * On the west coast of Harmony Island
 * On the bank of the River Salve (western border of Mort Myre Swamp)
 * Wieldable fishing nets (a small cast net and a big cast net)
 * The option to hunt the Thalassus 10 more times for a total of 46,660 extra hunter experience.

Music Unlocked

 * Deadliest Catch
 * Three of a Kind

Post-quest
Following the quest, players can hunt the Thalassus up to ten more times for a total of 46,660 additional hunter experience. Doing so is a requirement for obtaining the completionist cape. The difficulty increases with each run, adding in new factors such as restricting 'The Guns' energy (and thus limiting how far you can move. However if the player moves only one square at a time no energy will be consumed). After the second run, 'The Guns' energy decreases each time, meaning your movement matters a lot more. The experience is divided as follows:

Trivia

 * On the day of release, the rewards read: "Jones didn't have a strong enough line to reel in the rewards today. Pop back tomorrow when he's got himself a harpoon."
 * Upon completion of the quest the players adventurer's log will read: "I helped Jones hunt down the deadly sea creature."
 * It is possible to receive up to 53,020 coins, 170 laws, and 160 blood runes for a total of approximately 146,710 coins if they are sold on the Grand Exchange.
 * The first part of the quest (gathering items and asking 'The Guns' to help) is a reference to Moby Dick.
 * While one needs 70 Thieving to start the quest, the game guide claims 60. It was also stated in the Behind the Scenes - June that the quest will require a thieving level of 60. It also said the required Hunting level was 70 and the required Fishing level was 67, when the quest was released it was the opposite way.
 * This is the first interactable appearance of Linza, one of the seven Signature Heroes, after being mentioned in the first Fremennik Saga, Threes Company.
 * Tentacle's island is a reference to the Odyssey and Greek mythology. When they 'drag' the player ashore, she addresses the player as if she were Calypso.