Anime DetailsFINISHED
- Format
- TV series
- Episodes
- 65
- Episode length
- 25 min
- Total watch time
- 27 h 5 min
- Status
- Finished
- Aired
- January 13, 1969 – September 2, 1971
- Season
- Winter 1969
- Source
- Original story
- Director
- Yoshiyuki Tomino
- Age rating
- PG — Children
- Country
- Japan
- AniList score
- 56/100
- Also known as
- Kaitei Shonen Marine, Marine Boy eroe degli abissi, Under Sea Boy Marine
- Score across sites
- 5.65/10
- Wikipedia
- Read article
Tags & Tropes
Marine Boy
Synopsis
Yet another expansion of the Marine Boy series. This time 65 episodes were added to the 1966 series and all 78 episodes were sold to the US. The broadcast history of the show in Japan was slightly more complicated, with only the first 36 episodes of the 78 shown at first but later on all 78 were shown, out of which 65 are contained in this entry and 13 in the Ganbare! Marine Kid series.
Should you watch Marine Boy?
Only if you enjoy action, adventure and sci-fi, especially stories with kids, animals.
Reception is lukewarm: 56/100 on AniList, with 42% of 119 ratings at 8/10 or higher.
21.0% of viewers drop it before the end, more than most, so give it a few episodes to see if it clicks.
Watch Ganbare! Marine Kid first: this continues its story.
At roughly 27 h 5 min in total, it is a long commitment — about 4 weeks at an hour a day.
Where to Watch Officially
A streaming link is not listed for this title yet.
Episodes
65 episodes are listed.
Creators & key staff
- Director
- Yoshiyuki Tomino
Where it fits in the series
- Watch first: Ganbare! Marine Kid (1966)
Related entries
Opening & ending themes
Openings (1)
Endings (1)
Theme data from AnimeThemes.moe.
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Marine Boy FAQ
How many episodes does Marine Boy have?
Marine Boy has 65 episodes of about 25 minutes each, roughly 27 h 5 min in total.
How long does it take to watch Marine Boy?
About 27 h 5 min back to back. At two episodes a day it takes 33 days; at one hour a day, about 28 days.
Is Marine Boy finished?
Yes. Marine Boy has finished airing — the final episode aired September 2, 1971.
Is there a season 2 of Marine Boy?
No sequel is listed for Marine Boy as of October 2026.
What should I watch before Marine Boy?
Watch Ganbare! Marine Kid first — Marine Boy is a direct sequel.
Is Marine Boy based on a manga?
No. Marine Boy is an original anime story, not adapted from a manga or novel.
Who sings the opening of Marine Boy?
The opening, "Kaitei Shounen Marine", is performed by an uncredited artist.