Day at the Aquarium
Day at the Aquarium is a members achievement in the Combat category (Raid: Liberation of Mazcab), worth 25 RuneScore points. It has no requirements.
In game: “Defeat Yakamaru with one durable jellyfish and one reflecting jellyfish still alive.”
25 RuneScoreCombatRaid: Liberation of MazcabYakamaruMembersElite combat achievement
Updated . From the RuneScape Wiki's achievement data (CC BY-NC-SA 3.0), checked 2026-10-09. Wiki page.
Requirements
None: any account can do this one as soon as it reaches the right place.
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