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to go under; to pass under; to go through; to pass through
to dive (into or under the water)
to evade; to get around; to slip past
to survive; to surmount
フェンスの下を潜って通りました。
I went through under the fence.
彼はフェンスの下の隙間を潜って向こう側へ出た。
He went under the gap beneath the fence and came out on the other side.
子猫が狭い柵の間を潜っている。
The kitten is squeezing through the narrow gaps in the fence.