Japaneseすみだ水族館【公式】 is on Twitter (X) as @Sumida_Aquarium, with 261,681 followers and 7,953 posts. A typical post draws 1.2K interactions, an engagement rate of 0.441% per follower. It has been on X since October 2013, an account age of 13 years.
Engagement
A typical post picks up 1.2K interactions against 262K followers, an engagement rate of 0.441%. Measured over 52 original posts, its engagement rate beats 83% of 21,185 tracked accounts of a similar size. Comparing inside a size band matters here: engagement rate falls as accounts grow, so a raw rate would mostly just re-measure the follower count. Posts are seen about 24K times each, and 4.88% of those impressions turn into an interaction. That is about 9.05% of the follower count, which is the gap between an audience on paper and an audience in a timeline.
Measured over 52 original posts from a 30-day window, last computed on September 24, 2026. Recurring tags: #すみペン羽コレ, #すみだ水族館, #羽毛さん日誌.
Full engagement reportFollower growth
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Bio
すみペンファンの皆さま(=羽毛さん)は「#羽毛さん日誌」をつけて投稿してね✨ 水族館から発信する、未来をつくるプロジェクト”AQTION!"https://t.co/h0dyRaCqkE
Notable followers
The biggest accounts in our directory following @Sumida_Aquarium.
すみだ水族館【公式】 on Twitter (X) - frequently asked questions
- What is the Twitter handle for すみだ水族館【公式】?
- すみだ水族館【公式】 posts on Twitter (X) as @Sumida_Aquarium. The profile is at x.com/Sumida_Aquarium, and the View on X button at the top of this page opens it.
- How many followers does すみだ水族館【公式】 have on Twitter?
- すみだ水族館【公式】 (@Sumida_Aquarium) has 261,681 followers on Twitter (X). The count is refreshed continuously from public data.
- When did すみだ水族館【公式】 join Twitter?
- すみだ水族館【公式】 joined Twitter (X) in October 2013. The @Sumida_Aquarium account is 13 years old. Searches for すみだ水族館【公式】 age often mean a personal age, which we do not publish. The figure here is the account age only.