Alaea crablets can only be found on Uncharted Isles in the Arc region in groups of 5 crablets. Despite being a creature, the crystal deposit on the crablet's back acts as a mining resource, requiring level 97 Mining to be harvested. Mining the crablets produces alaea sea salt, sought after as an ingredient in shark soup. Salts may be sold to Salty Goods in the Waiko market for 5 chimes each.
When a player begins mining a crablet, it becomes a "Relaxed alaea crablet" and ceases movement until the deposit on its back has been depleted, indicated by a yellow bar. The crablet will remain relaxed until the player has mined a total of 40 alaea sea salt. After the bar has expired, the crablet will be depleted and the player will no longer be able to mine from it. Relaxed crablets will deplete immediately if the player logs out or switches worlds.
Every three games the player fills a portion of their progress bar towards harvesting salt from the crablet's back. At level 99 Mining without boosts, a player can expect approximately 240,000 Mining experience per hour. Using all boosts possible, (legendary quarrymaster aura, skillchompas, an augmented pickaxe of earth and song with Honed 5 and Furnace 2 perks, decorated mining urns with an urn enhancer, magic golem outfit and golden mining suit) it is possible to get upwards 400,000 Mining experience an hour.
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- patch 18 February 2019 (Update):
- Mining crablets no longer depletes stamina, so they can be mined AFK as before. Their hitpoints have been lowered so that a crablet is typically mined in a little under 5 minutes. The XP from mining crablets has been reduced to compensate.
Concept art for the crablets found on uncharted isles.
- Alaea crablets spawn around a pile of dead fish on Uncharted Isles. The "Dead fish" marks the minimap with a icon.
- Alaea crablets show up on the minimap as yellow dots. After they have been depleted, they disappear from the minimap.
- Relogging into the game after an alaea crablet has been depleted, but before the day resets makes it disappear.
- A relaxed crablet has an asterisk (*) before their name label, which normally indicates a monster that has been tagged in combat.