This must be what a puffer fish looks like to a Ramshorn snail, just before the puffer nails the snail and ducks him out of its shell. Puffers are cute but they can be very aggressive, even to humans. I watched a nature video about water ^monsters^, in which an English fella was investigating attacks on humans in an Indonesian country (cannot recall which one), one of which resulted in a man dying of blood loss when the attack hit an artery in the back of his knee. Turns out the ^monster^ was a little puffer fish.
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