That depends entirely on the Pokemon. A Magikarp, for instance, likely wouldn't do much but flop around on dry land, but something like a Squirtle or an Empoleon would be able to manage much better.
As for the problem of your Zigzagoon, I'd suggest just finding one that's bigger than he is.
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As for the problem of your Zigzagoon, I'd suggest just finding one that's bigger than he is.