Batman #138: Secret of the Sea Beast
Read a concise guide to Batman #138: Secret of the Sea Beast, including cover date, series details, summary, characters, and collector-friendly context. Ch
- Series
- Batman
- Issue number
- 138
- Cover date
- 1961-03-01
- ComicVine ID
- 5210
Quick answer
Batman #138: Secret of the Sea Beast stands out in Gotham Vault because the issue title, character tags, and 1961-03-01 cover date create a distinct entry point into Batman. Readers can use it to jump from this issue into Batman, Batman Robot, Casey the Cop, Nightwing (Dick Grayson) and related Batman continuity.
Issue summary
Batman with Robin - Batman's Master Casey the Cop Batman with Robin - The Simple Crimes of Simple Simon Letters to the Bat-Cave Jail Jests Batman with Robin - The Secret of the Sea Beast
Citation summary
Batman #138: Secret of the Sea Beast is a Batman issue with cover date 1961-03-01. Gotham Vault links it to Batman, Batman Robot, Casey the Cop, Nightwing (Dick Grayson), Commissioner Gordon (James Gordon).
Characters listed for this issue
Story arc / special series
This issue is not currently tagged to a specific Gotham Vault story arc. Use the main database to browse related Batman issues by series, character, and year.
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FAQ
What comic is Batman #138: Secret of the Sea Beast?
Batman #138: Secret of the Sea Beast is a Batman-related comic issue in Gotham Vault's database. It is listed under the Batman series as issue #138 with a cover date of 1961-03-01.
Who appears in Batman #138: Secret of the Sea Beast?
Gotham Vault currently identifies these characters for this issue: Batman, Batman Robot, Casey the Cop, Nightwing (Dick Grayson), Commissioner Gordon (James Gordon).
Is Batman #138: Secret of the Sea Beast part of a story arc?
This issue is not currently tagged to a specific Gotham Vault story arc or special series.
Where can I explore more Batman comics like this?
Use Gotham Vault to browse Batman issues by series, character, year, and story arc, or start with the Batman reading guides for a cleaner path through continuity.
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Last updated 2026-05-27. Comic metadata is curated from Gotham Vault’s local database.