Deep Sea Fishing

Deep Sea Fishing is a Fishing activity that is accessed by talking to Goomah in the Fishing Guild. It is available to players from level 68 fishing (the same requirement to enter the Fishing Guild) and involves fishing in the Deep Sea Fishing hub.

Minnow
Minnow fishing can be done at the south-east portion of the platform with level 68 fishing. Magnetic minnow can be caught 1-3 at a time and are stackable. They can be turned into manta ray, sea turtle, or great white shark bait if the player grinds 300 magnetic minnow. They can't be cooked, but the player can eat them for 100 life points each. This activity is low intensity as the minnow shoals will move every few minutes, but they give less experience than other fishing methods. The rowboat north along the platform from the minnow shoals can be used as a bank. Fishing them gives between 45,000 experience an hour, at level 70 Fishing, and 87,000 experience an hour, at level 99 Fishing.

Magical fishing spots
All over the platform, magical fishing spots can be found. These are only usable if manta ray, sea turtle, or great white shark bait from the minnows has been obtained beforehand. The spot will then allow the gathering of 50 fish, at which point the player will have to use another bait. Fish from the random event boosts, the Fury shark outfit's set bonus, or the Fishing cape perk do not count towards the 50 fish limit.

Swarm fishing
The south-west portion of the platform hosts a giant swarm net, which can be used without any requirements. It will catch a range of fish from mackerel to all the way to sailfish. The player can catch fish that are above their fishing level. A higher fishing level increases the chances of getting higher-levelled fish. Occasionally, the player will stop fishing with the message: "A fish snags against the net." A Magical net north along the platform from the swarm net acts as a deposit box. Fishing from the swarm gives around 70,000 experience an hour at level 99 Fishing.

Jellyfish
Two types of jellyfish can be found at the north portion of the platform: green blubber jellyfish and blue blubber jellyfish, requiring level 68 and 91 fishing respectively. They can be cooked into their cooked equivalent and be eaten without losing adrenaline. At level 99 Fishing, fishing green blubber jellyfish gives around 61,000 experience an hour and fishing blue blubber jellyfish gives around 100,000 experience an hour.

The jellyfish may occasionally electrify themselves. Fishing at an electrifying spot causes a debuff stack to accumulate with each catch. This can be gradually cleared by fishing at a non-electrifying spot, which reduces the debuff by 2 stacks for each catch. If it reaches 10 stacks, continuing to fish at an electrifying spot will cause the player to be stunned for 10 seconds (this can be cleared with Freedom). If the player is stunned by an electrifying jellyfish, the debuff will transform into a 2.5 minute cooldown, which will refresh itself if the player is stunned again during that time. The cooldown prevents the player from fishing electrifying jellyfish spots. The player can continue to catch non-electrifying jellyfish, but they will have no effect on the debuff during this time. The debuff vanishes completely after the cooldown ends. A bank boat is near this platform, so players can bank their items.

Fishing frenzy
Towards the north-west portion of the platform, fishing frenzy spots can be found where the player must continually fling fish from the constantly changing fishing spots, requiring level 94 fishing. This method does not gain any fish, but it will give plenty of experience. It is possible to achieve the highest fishing experience per hour in game using this method. Continuously fishing gives a "streak" bonus of +1% xp boost for every 10 catches (up to 20% xp boost with a soft cap of 200 streak). The streak will be lost if the player is inactive for 6 seconds. Success rate depends on the player's Fishing level (up to a maximum of 100% success rate at level 99).

At level 99 Fishing, fishing frenzy gives around 285,000 base experience an hour. At level 99 fishing, one can also gain at least 26,300 item experience an hour for their Fishing rod-o-matic, augmented crystal fishing rod, or augmented tavia's fishing rod.

Gaining a streak of 200 will grant the Frenzied achievement.

Sailfish
Sailfish can be found on the north-eastern portion of the platform, requiring level 97 fishing to catch. There are three sailfish spots that can appear: swift, regular, or calm spots. Swift spots give more xp and have a higher catch rate, but they disappear quicker, while regular spots will last longer but have a lower catch rate. There is also a rare chance that players may encounter a calm sailfish spot, and these calm spots last longer than normal sailfish spots. Sailfish can be cooked into their cooked equivalent. Cooked sailfish can also be made into sailfish soups with Spices in Player-owned ports (which requires the player to have completed the full Eastern Soups Recipe Scroll). A Magical net west along the platform from the sailfish spots acts as a deposit box. Fishing sailfish gives around 90,000 experience an hour at level 99 Fishing.

Random events
This hub has random events and interactions that take place in the centre of the area. These increase experience rates, as well as give temporary boosts to fishing. When a random event appears there will be a public chat announcement, and the skybox will change to a nighttime setting.

Whirlpool
A giant whirlpool appears in the middle of the platform, and players may donate money to receive the titles previously only available from the Well of Goodwill. This money does not go to charity. It is simply removed from the game. The whirlpool is also harvestable for random fish.

If more than is donated, a random deep sea fishing boost lasting 10 minutes is given to players when the event ends. If the pool has a golden glow, this is an indication that enough money has been donated.

The achievement Make A Wish is completed when throwing money into the whirlpool.

Travelling Merchant
A Travelling Merchant can randomly appear, offering an improved Uncharted island map for 800,000 coins, as well as a selection of three other items such as a crystal triskelion, small goebie burial charm, gift for the Reaper, large Menaphite gift offering, barrel of bait, or Slayer VIP Coupons among others. Once you have purchased an item and it appears as sold out you cannot purchase that item again even if the merchant reappears in the same day. His stock changes on the daily reset at 00:00 game time.

The Travelling Merchant is a large ship that is moored to the west of the Deep Sea Fishing hub (2-storey building with nets). Clicking on the ship will open a menu for trade. Purchasing an item will complete the achievement Up for sail.

Maps from the store lead to Uncharted Isles with 4-6 special resource spots on them.

Arkaneo
The legendary sailfish Arkaneo arrives in the middle of the platform and lasts ~50 seconds. He swims around in circles rapidly before departing. The player cannot interact with him. After he leaves the player is granted all three of the deep sea fishing boosts for 15 minutes if the player is on the same world, or 5 minutes if the player hops worlds.

Deep-sea encounters

 * Sea Monster - Rapidly feed the sea monster using the rotten fish from the barrels or raw fish from your inventory. Successfully completing this event will grant a 10% chance to gain an additional catch. (lasts 10 minutes if the player world hopped or 30 minutes if the player is on the world when the event happened).
 * Jellyfish invasion - Kick jellyfish off the docks. Successfully completing this event grants a 5% fishing experience boost for 10 minutes if the player world hopped or 30 minutes if the player is on the world when the event happened.
 * Whale - Rescue a fisherman swallowed by the whale by fishing out minnows from it. Successfully completing this event will grant a 10% fishing rate boost. Boost lasts for 10 minutes if the player world hopped or 30 minutes if the player is on the world when the event happened.

Achievements
There are 7 Fishing achievements in the Deep Sea Fishing hub.

Gregg's ring
While fishing, Gregg 'groggy' herring's ring can be found and returned to Gregg. He can be found in the crow's nest at the top of the tall mast on the Deep Sea Fishing hub (2-storey building with nets). He is above the Fish Flingers' Fisherman on the upper level. This will complete the achievement My precious!. Note that you cannot climb to the top, you must shout to him from the lower level.

Boosts
Three different boosts can be acquired while fishing on the hub. These are:
 * , granting a 10% chance to gain an extra catch for 3 minutes.
 * , granting a 10% bonus catch rate for 3 minutes.
 * , granting 5% extra fishing experience for 3 minutes.
 * , gives the option to choose one of the above boosts for 5 minutes.

These boosts have to be activated by using the corresponding item.

Seagull
Players can shoo away a seagull to gain Fishing experience.

Minnowman
A Minnowman appears near the minnow shoals asking for minnow. The player can contribute magnetic minnow to the Minnowman to receive Fishing experience once the Minnowman leaves the area (caps at 1,940 experience at level 99 Fishing).

Seasinger
A siren will sing the names of players, and if responded to, the player will gain a small amount of Fishing experience.

Captain Deathbeard
Captain Deathbeard will pass by in a row boat, asking for directions. If responded to, the player will gain a small amount of fishing experience once he leaves the area.

Fisherman
A fisherman will fall in the water and the player can check on them if they are doing okay. If responded to, the player will gain a small amount of fishing experience once he gets back on the dock.

Treasure turtle
The treasure turtle will give you a free clue scroll reward if you're on the same world as it spawns. Otherwise it will only unlock the achievement.

Pelican
Players can feed a pelican a fish to gain Fishing experience.

Fishing Notes
Players may receive Fishing Notes randomly while fishing. These can be read for fishing experience.

Trivia

 * Portable skilling stations cannot be placed on the platform.
 * A Portable deposit box can be placed on the platform.
 * During the whale Deep-sea encounter, Misty states "Captain, there be whales here!" This could be a reference to Scotty's line in Star Trek IV: The Voyage Home. He states it when the humpback whales, George and Gracie, are beamed aboard the ship to be taken back to the 23rd Century.