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The Giant Oyster waiting to be fed

The Giant Oyster is a monthly Distraction and Diversion within the sunken Tutorial Island that is accessible upon completion of Beneath Cursed Tides. Players can collect and catch items to feed to the Giant Oyster, receiving Fishing and Farming experience from doing so. Once fed, the Giant Oyster will close its mouth, preventing further feedings. The following month after being fed, the Giant Oyster can be checked, opening to reveal treasure inside for the player to collect.

Players can leave the island by teleporting away or by leaving to the surface through the bubbles in the building north-east of the seaweed patch.

Free-to-play players may gain Fishing experience from fishing sea cucumber, but will not receive any rewards.

The Giant Oyster can be reset with a monthly D&D token.

Getting started[]

A Giant Oyster that has been fed

To begin feeding the Giant Oyster, speak to Wizard Myrtle, found in front of the entrance to Wizards' Tower. She will let you dive to Tutorial Island.

If the Oyster is already closed (from feeding the previous month) the player will not receive the sea cucumber or delicious seaweed items, but will still gain experience from the Fishing and Farming activity. If the player gains the maximum monthly experience from these activities without receiving the items, they must then loot the Oyster before re-attempting to fish and/or pick seaweed. Once the Oyster is open, they can then harvest the missing item(s), but will not receive any additional experience for the action. It is not known if this is a bug; however, there is no effect in terms of experience or rewards if the player forgets to loot the Oyster first and has to re-attempt the Farming or Fishing activity.

After feeding the Oyster the delicious seaweed and sea cucumber, the Oyster will close.

Feeding[]

The player must obtain a sea cucumber and delicious seaweed and feed these to the Oyster, which is found in the cooking area of Tutorial Island. Bonus experience is not gained when harvesting; experience-boosting sets will not boost experience gains either.

Sea cucumber[]

Fishing spot (Tutorial Island)

The Fishing spot

A sea cucumber can be fished from the fishing spots found west of the Giant Oyster. When attempting to fish, the player will gain Fishing experience 30 times before finally catching a sea cucumber. The amount of Fishing experience gained depends on the player's Fishing level.

The Fishing level can be boosted, and the player will receive the rate based of the boosted level (i.e. a boost from 94 to 99 will give 6,966 experience each harvest). As the boost wears away, the experience rate will as well.

The amount of Fishing experience gained from harvesting the cucumber is roughly three times of the amount of Farming experience gained from harvesting the delicious seaweed.

Table of Fishing experience
Level XP Total
1
2
3
4
5 11 330
6 11 330
7 11 330
8 11 330
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24 18 540
25 19 570
26
27
28
29
30 27 810
31 27 810
32 31 930
33 33 990
Level XP Total
34 35 1,050
35 38 1,140
36 41 1,230
37 44 1,320
38 47 1,410
39 50 1,500
40 54 1,620
41 59 1,770
42 63 1,890
43 68 2,040
44 74 2,220
45 79 2,370
46 86 2,580
47 93 2,790
48 99 2,970
49 108 3,240
50 117 3,510
51 126 3,780
52 138 4,140
53 149 4,470
54 162 4,860
55 175 5,250
56 190 5,700
57 206 6,180
58 224 6,720
59 243 7,290
60 264 7,920
61 285 8,550
62 311 9,330
63 338 10,140
64 368 11,040
65 400 12,000
66 435 13,050
Level XP Total
67 471 14,130
68 514 16,230
69 560 16,800
70 609 18,270
71 663 19,890
72 720 21,600
73 786 23,580
74 856 25,680
75 933 27,990
76 1,017 30,510
77 1,108 33,240
78 1,208 36,240
79 1,316 39,480
80 1,435 43,050
81 1,565 46,950
82 1,707 51,210
83 1,862 55,860
84 2,031 60,930
85 2,216 66,480
86 2,418 72,540
87 2,640 79,200
88 2,880 86,400
89 3,146 94,380
90 3,435 103,050
91 3,751 112,530
92 4,096 122,880
93 4,474 134,220
94 4,887 146,610
95 5,337 160,110
96 5,832 174,690
97 6,374 191,220
98 6,966 208,980
99 6,966 208,980

Delicious seaweed[]

Tasty looking seaweed

The tasty looking seaweed patch

Delicious seaweed can be harvested from the tasty looking seaweed patch north of the Oyster, near the large Jellyfish. When attempting to harvest from the seaweed patch, the player will gain Farming experience 30 times before finally harvesting delicious seaweed. The amount of Farming experience gained depends on the player's Farming level.

The Farming level can be boosted, and the player will receive the rate based of the boosted level (i.e. a boost from 94 to 99 will give 2,322 experience each harvest). As the boost wears away, the experience rate will as well.

The amount of Farming experience gained from harvesting the seaweed is roughly one-third of the amount of Fishing experience gained from harvesting a sea cucumber.

Table of Farming experience
Level XP Total
1 3 90
2 3 90
3 3 90
4 3 90
5 3 90
6 3 90
7 3 90
8 3 90
9 3 90
10 3 90
11 3 90
12 3 90
13 3 90
14 4 120
15 4 120
16 4 120
17 4 120
18 4 120
19 4 120
20 5 150
21 5 150
22 5 150
23 5 150
24 6 180
25 6 180
26 7 210
27
28 7 210
29
30 9 270
31 9 270
32 10 300
33 11 330
Level XP Total
34 11 330
35 12 360
36 13 390
37
38 15 450
39 16 480
40 18 540
41 19 570
42 21 630
43 22 660
44
45 26 780
46 28 840
47 31 930
48 33 990
49 36 1,080
50 39 1,170
51 42 1,260
52 46 1,380
53 49 1,470
54 54 1,620
55 58 1,740
56 63.4 1,900
57 68.7 2,060
58 74 2,220
59 81 2,430
60 88 2,640
61 95 2,850
62 103 3,090
63 112.7 3,380
64 122.7 3,680
65 133 3,990
66 145 4,350
Level XP Total
67 157 4,710
68 180.3 5,410
69 186.7 5,600
70 203 6,090
71 221 6,630
72 240 7,200
73 262 7,860
74 285.6 8,560
75 311 9,330
76 339 10,170
77 369 11,070
78 402 12,060
79 438.7 13,160
80 478.3 14,349
81 521 15,630
82 569 17,070
83 620.7 18,620
84 677 20,310
85 738.7 22,160
86 806 24,180
87 880 26,400
88 960 28,800
89 1,048.7 31,460
90 1,145 34,350
91 1,250 37,500
92 1,365.3 40,960
93 1,491 44,730
94 1,629 48,870
95 1,779 53,370
96 1,944 58,320
97 2,124 63,720
98 2,322 69,660
99 2,322 69,660

Rewards[]

Giant oyster example loot

An example of the rewards obtained by looting the Oyster.

At the monthly reset, the closed Oyster can be opened. Looting the Oyster will reward the player with items from the Treasure Trail reward tables. The player's total level is used to determine which tables the player can roll on, such as easy/medium/hard, or hard/elite, and then chooses between them randomly. While the rewards mechanic is similar to completing a treasure trail, the rewards cannot be re-rolled like those from a treasure trail clue scroll. Unique treasure trail rewards from the Giant Oyster will count towards the Treasure Trail collection log.

Achievement[]

  • Oyster Mash (RuneScore 5) - Feed the giant oyster on Tutorial Island.

Trivia[]

  • On 11 January 2016, a bug allowed players to repeatedly reset the oyster. This was patched within the hour. Players who abused the bug were banned or rolled-back, based on how much they abused the glitch.
  • On 11 April 2016, it was made possible to use the monthly D&D reset token for this D&D.
  • It's highly recommended if intending on using a Luck of the Dwarves ring to loot the Oyster before looting the seaweed and fishing at the fishing spot. Leaving the underwater area and coming back will lock the Oyster chest until the next regardless of the next reset, even if you didn't get to loot it.
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