OSRS Drop Calculator › Seaweed

Best way to farm Seaweed

All 29 monsters that drop Seaweed, ranked by realistic quantity per hour — not just drop rate. Change the seconds-per-kill for any monster to match your own speed. 1 other source isn’t ranked; see why below.

Drop data: Seaweed on the OSRS Wiki

Currently fastest method
Giant lobster (Ghosts Ahoy)
360 / hr
Monster Drops (rarity · quantity) Avg/kill Sec/kill Kills/hr Qty/hr
Giant lobster (Ghosts Ahoy)
Combat lvl 32
Always · 1
 1 10 360 360
Kraken
Combat lvl 291 · Slayer 87
3/128 · 125 noted
 2.93 32 112 330
Eagle ray
Combat lvl 44
14/150 · 10–15 noted
 1.17 14 257 300
Dolphin
Combat lvl 22
10/50 · 3–5 noted
 0.8 13 277 222
Dagannoth (Waterbirth Island) (Level 88)
Combat lvl 88
30/128 · 1–10
 1.29 21 171 221
Lobstrosity
Combat lvl 68
8/118 · 6 noted
 0.407 13 277 113
Ice troll runt (Variant 1)
Combat lvl 74
10/128 · 3–9 noted
 0.469 16 225 105
Butterfly ray
Combat lvl 68
6/149 · 10–15 noted
 0.503 19 189 95
Cave kraken
Combat lvl 127 · Slayer 87
6/200 · 30 noted
 0.9 35 103 93
Ice troll female (Variant 1)
Combat lvl 82
10/128 · 3–9 noted
 0.469 19 189 89
Ice troll grunt
Combat lvl 100
10/128 · 3–9 noted
 0.469 19 189 89
Ice troll male (Variant 1)
Combat lvl 82
10/128 · 3–9 noted
 0.469 19 189 89
Manta ray (monster)
Combat lvl 133
5/99 · 10–15 noted
 0.631 37 97 61
Stingray
Combat lvl 92
3/100 · 10–15 noted
 0.375 22 164 61
Rock Crab
Combat lvl 13
4/128 · 1
4/128 · 2
2/128 · 5
 0.172 14 257 44
Waterfiend
Combat lvl 115
2/128 · 20–30 noted
 0.391 34 106 41
Sand Crab
Combat lvl 15
4/128 · 1
4/128 · 2
2/128 · 5
 0.172 17 212 36
Dagannoth
Combat lvl 74–92
2/128 · 10
 0.156 17 212 33
Mogre (sea)
Combat lvl 54 · Slayer 32
16/128 · 1
 0.125 15 240 30
Swamp Crab
Combat lvl 55
4/128 · 2–8
 0.156 19 189 30
Dagannoth spawn
Combat lvl 42
10/128 · 1
 0.078 10 360 28
Ammonite Crab
Combat lvl 25
8/128 · 1–2
2/128 · 5
 0.172 26 138 24
Sea Snake Hatchling
Combat lvl 62
2/128 · 5
 0.078 13 277 22
Rock lobster
Combat lvl 127
10/128 · 1–3
 0.156 35 103 16
Sea Snake Young
Combat lvl 90
2/128 · 5
 0.078 21 171 13

Other sources (not ranked)

Elder aquanite is a superior slayer monster: it only appears randomly (~1 in 200 kills) while you’re on a slayer task. So it’s not included in the ranking above.

Monster Drops (rarity · quantity) Avg/kill
Elder aquanite
Combat lvl 305 · Slayer 78
~1/13 · 1 (3 rolls)
 0.231
How this is calculated: items/hr = (3600 ÷ seconds per kill) × average items per kill. Each monster's drop lines are listed as the wiki shows them (rarity · quantity); the average adds them all up, each as rarity × average quantity × rolls — so a guaranteed drop plus a rarer bonus drop both count. Drop rates and quantities come from the OSRS Wiki's community-verified drop tables. Seconds-per-kill is an editable estimate based on each monster's hitpoints and defence — your real speed depends on your stats and gear, so adjust it and your edits are remembered on this device. Rates marked ~ are approximate on the wiki.

Something wrong on this page?

Drop rates come from the OSRS Wiki and kill times are estimates, so mistakes happen. Tell us what's off and it'll be looked at.