みえます・きこえます
When it reaches you all by itself

It's simply in view. You didn't decide to look — your eyes just receive it.
うみが みえます
A sound arrives at your ears on its own. No choice involved.
おんがくが きこえます
The potential of みる — you have the chance or the means to watch it.
えいがが みられます

まどから うみが みえます。

うみが きれいですね。
みえます・きこえます
These two verbs are for things that reach your eyes and ears without you doing anything at all. You didn't decide to see the sea — you looked up and it was there. The thing that appears takes が, and there is no を anywhere. 🔊 Tap to hear.
Two special verbs for things that reach your eyes and ears without you doing anything. You didn't decide to see it — it was simply there, in view. みえます = is visible / can be seen. きこえます = is audible / can be heard. The thing you see or hear takes が, and there's no を anywhere.
みえる ↔ みられる
Both come out as “can see” in English, so English is no help here. Ask one question instead: was there a choice? If it just landed in your eyes, it's みえます. If you have the chance or the means to watch it, it's the potential form みられます. 🔊 Tap to hear.
Both come out as “can see” in English, so English can't help you here. The difference is whether a choice is involved. ・みえます — it's simply in view. Nobody chose anything. Your eyes just receive it. ・みられます — the potential form of みる. You have the chance / the means to watch it. Same story for きこえます (a sound reaches you) ↔ きけます (you're able to listen to it).
クイズ
Five quick questions on this unit before the phase wrap-up.
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Phase N まとめ
Ten questions covering the whole phase — making the form in all three groups, the を→が flip, できる, the Unit 21 equivalence, and みえる ↔ みられる. Finish it and Phase N is yours.
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