Old School RuneScape Wiki

Seaweed detail.png

Seaweed is an item dropped by creatures near water like Rock Crabs. It can be used with a fishbowl that is full of water so that you can catch a fish in the Catherby aquarium. Seaweed can be used for normal compost.

Seaweed can be cooked on a range or fire to create soda ash.


Dropping monsters

Monster Combat level Quantity Rarity
Rock Crab 13 2–5 2; Common
Dagannoth (Lighthouse) 74; 92 10 2; Common
Kraken 291 125 (noted) 2; Common
Waterfiend 115 10–29 (noted) 3; Uncommon