I am not sure what a fictional film has to do with the discussion here.

Maybe ? I know you're trying to make a distinction between communication and language which is fair but all signs we have point to there being a distinct possibility that one of our ocean friends, in the whale and/or cetacean class do have language. It's nowhere near as absurd as you're making out.

I don't speak whale, so it is hard to make a claim. I am sure linguists can estimate the complexity of an animal's utterances with the help of machine learning, using quantitative tools like Zipf's Law, Menzerath's Law, Conditional Shannon Enropy, and Repertoire Size.

Whale and Dolphin "languages" (or substitute "utterances" if the hypothesis is so antithetical to you) score remarkably complexly, close to Human "utterances" (again, if animal language is so offensive a notion) on some of these measures. Dog utterances do not:

Zipf's Law (Data Efficiency) • Humans: -1.0 slope showing an optimal balance of information and physical effort. • Whales & Dolphins: -1.0 slope matching the exact mathematical curve of human speech. • Dogs: No -1.0 slope, heavily skewed toward isolated, repetitive alert spikes.

Menzerath's Law (Physical Pacing) • Humans: Present; internal sounds get shorter as the total sequence grows longer. • Whales & Dolphins: Present; highly efficient pacing across multiple species. • Dogs: Absent; vocalizations lack the structured phrase sequences required for this law.

Shannon Entropy (Predictability) • Humans: High; complex grammatical dependencies stretch across long sentences. • Whales & Dolphins: Moderate-High; governed by structural rules and click patterns. • Dogs: Very Low; individual sounds are isolated events with no grammatical rules.

Repertoire Size (Signal Diversity) • Humans: Infinite vocabulary built from tens of thousands of words. • Whales & Dolphins: High diversity with hundreds of whistles and thousands of clicks. • Dogs: Very small vocal pool limited to roughly 10 distinct sounds.

I'd say, it's difficult to say, but calling the hypothesis of whale language "absurd" sounds like something someone might have said (and still might say, incorrectly) about the concept of evolution by natural selection. I think you are overselling your argument.