蝶

How it works

Two quick bursts joined by a comma. 見てみて (look) is the て (te-form) of 見るみる (to look) used on its own as a casual “look!” — the te-form can stand alone as a soft command between friends. Then the noun 蝶々ちょうちょ (butterfly) is simply thrown out by itself, no verb needed: pointing and naming what you see.