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to dive (into or under water)
to get under; to get into; to get in; to creep into; to crawl under; to bury oneself; to burrow into; to dig oneself into; to snuggle under
to hide oneself (esp. from the government); to conceal oneself; to go underground
「潜る」 has another reading with different meanings.
子供たちはプールで潜って遊んでいた。
The children were playing by diving in the pool.
彼は布団に潜ってなかなか起きてこない。
He hides under the futon and won't get up.
海に潜ると色々な魚が見えて楽しいです。
It's fun to see various fish when you dive in the sea.