Seaweed

For the item found during the quest Hunt for Red Raktuber, see Seaweed (Hunt for Red Raktuber).

Seaweed is a key ingredient in making molten glass, although it must first be cooked into soda ash if the player is not using the Lunar spell Superglass Make. Using seaweed on a range or fire will cook it into the Soda ash. Burning seaweed into soda ash does not generate any Crafting or Cooking experience.

Levels 1 to 74

 * }

Levels 75 and above

 * }

For free
Seaweed can be found in several places, along shorelines and sometimes rivers. Some locations are:


 * Karamja, Brimhaven area. The western and eastern shores have seaweed, as does the southern shore of the inlet separating Musa Point from the main mass of Karamja. Both banks of the river that flows through Shilo Village also have seaweed. (Since this watercourse has a waterfall, it is more likely a river than an inlet of the sea.)
 * North-western Entrana. There are no longer 10 here Jagex has removed most of them, only 3 are left.
 * Northern Fremennik Province, in the Rock Crab area north-west of the entrance to Keldagrim. This area has numerous seaweed spawns and a fire, so that seaweed can be gathered and turned into soda ash quickly. The area does not have a bank within convenient walking distance, but using Fairy rings allows fairly quick access between this area (coordinate AJR) and the bank at Zanaris. Note: It is faster to use Fairy ring code DKS (Snowy Hunter Area). (Players must complete at least part of the quest A Fairy Tale Part II to have full access to the fairy rings.)
 * North-eastern corner in Piscatoris Fishing Colony. There are two nets with seaweed.

As drops
Seaweed is available as a drop from monsters. For example, Rock Crabs drop either seaweed or noted seaweed.

By purchasing
Seaweed can be bought from Arhein in Catherby for 2 coins each. Arhein does not stock the seaweed in his shop; instead, players must choose to talk to Arhein and use the prompt: "Can I buy some seaweed?". Arhein will only sell 80 seaweed per day. He sells the seaweed noted. There is both a range and a bank near Arhein, which is quite convenient for rapidly turning the seaweed into Soda ash.

This can be a good opportunity for lower-levelled players to make money, by buying 80 seaweed for 160 coins a day, then selling it on the Grand Exchange where it sells for each. This will usually sell quickly on the Grand Exchange

Additionally, players may be able to purchase seaweed on the Grand Exchange, or by trading with another player.

By fishing
Players may acquire seaweed by catching it in a big net while fishing at a net fishing spot.

The Superglass Make lunar spell allows players to use either seaweed, OR soda ash to make molten glass. So if the spell is used, there is no need to burn the seaweed into soda ash.

Ten seaweed can be stored in a Seaweed net.

Making Money Using Seaweed
Seaweed is very commonly used for making money. Examples would include:


 * Buying 80 Seaweed a day at Catherby from Arhein for 2gp each and selling them in the G.E. yields relatively large profit margins.


 * Catching Seaweed using a Big fishing net in certain fishing spots around RuneScape that are close to a bank, such as Catherby.


 * Burning Seaweed into Soda Ash on a fire or range, which will make around 4k per inventory.