Mostly when I see spotted pufferfish they’re below me and quickly dive even lower. This one was quite high in the water and it was a while before it headed down to the safety of a greater depth.
Spotted pufferfish
Graham's Island
Life on the Big Island of Hawaii
Graham's Island 
The fins are so small for his size!
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There are quite a few fish that look woefully underpowered like that, but they seem to get around just fine.
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