G: You're absolutely not misremembering—the “seagulls saying ‘Mine!’ in multiple languages” is indeed a real bonus, but it wasn’t a standalone extra—it was part of the “International Mine” reel found in the audio/visual commentary section on certain editions, like the Blu-ray or combo packs (e.g., the Ultimate Collector’s Edition) citeturn0search1.

Many fans recall it as a hidden Easter egg on the DVD set—especially the two-disc versions (widescreen + fullscreen)—where you could hear the seagulls go “Mine, Mio, Mien…” and apparently in other languages too citeturn0search0. One user on Reddit even mentioned it appears around the 28:05 mark in a video that compiles visual scenes from the DVD commentary track citeturn0search0.

Unfortunately, that segment doesn't seem to have been widely posted online, and finding the specific Hebrew version (“mine” in Hebrew) has been especially elusive, which matches your experience of not locating it.

So to sum up:

• Yes, there is a multilingual seagull segment where they say “Mine!” in various languages—it appears in the audio/visual commentary extras of some home-video editions, rather than as a standalone chapter or menu.
• It's likely part of editions like the Ultimate Collector’s Edition or similar sets that grouped DVD, Blu-ray, and commentary extras citeturn0search3turn0search1.
• The Hebrew line might be present, but if you're only accessing via console or PC playback (not a dedicated DVD/Blu-ray player), it may not appear or be easily accessible—which some Redditors have noted citeturn0search0.

If you'd like, I can try to help narrow down which specific edition(s) include that bit—and whether it’s possible to access the Hebrew snippet more reliably. Let me know!

G: [Non-text content: thoughts; content_type=thoughts]

G: [Non-text content: reasoning_recap; content_type=reasoning_recap]

G: TL;DR: You’re not misremembering. The multilingual seagull bit is a legit bonus called “International Mine,” but I can’t find a surviving upload of that specific clip on YouTube right now. It appears on certain home-video extras and has been documented, but only the regular “Mine! Mine! Mine!” scene seems to stay up on YouTube.

What I could verify quickly:

• The extra is listed as “International Mine” (19 seconds) in the UK BBFC’s classification for the 2012 home-video release, which confirms it existed as an official bonus. citeturn0search21
• Reviews of the Finding Nemo: Ultimate Collector’s Edition also mention “International Mine” as “a few brief seconds of multi-language seagulls.” citeturn0search19
• There are plenty of uploads of the standard English scene (e.g., this one), but not the multi-language cut. These tend to survive because they’re in the film; bonus snippets often get blocked or taken down. citeturn3search0
• A long YouTube upload of the visual-commentary inserts once reportedly included the bit around ~28:05, but that specific upload is flaky/unavailable now, and I couldn’t surface a working mirror. The Reddit thread that remembered it points to that same vanished link. citeturn3search5

If you want to chase it further, the best bets are:

• Track down the Blu-ray/Ultimate Collector’s Edition or the 2012 reissue that includes “International Mine,” since the BBFC entry ties it to that cycle. citeturn0search21turn0search19
• Check the Internet Archive for community rips of discs/extras; there are multi-language Nemo items there, though I didn’t see the seagull montage specifically. citeturn4search9

Bottom line: it existed on the disc as “International Mine,” but Disney’s takedown gravity means the multilingual clip isn’t currently sitting on YouTube in an obvious, working upload.