There is only one situation when a butterfly has a coiled shell. This is when the butterfly has died and its internals are dried up. The shell then covers the dead insides.
Of sorts, they have what's called an exoskeleton, and it's made of sugars and proteins, not the same stuff that makes shells such as egg shells or the shells of molluscs.
A butterfly is made of three parts, the head, thorax, and abdomen. It also has six legs and two wings.
If you take a rope and coil it up on a flat table, you will get the basic idea of what a coiled shell looks like. Or, you could look at a cinnamon roll which is the culinary equivalent of a coiled shell. I'm going to let you decide....does a lobster look like a cinnamon roll?
False
Nautilus
No
The answer is octopus.
The proboscis is the coiled, tube-like appendage on butterflies and some other insects. When the butterfly wants to drink nectar, it uncurls the proboscis and uses it like a straw to suck up nectar from flowers.
They suck nectar through their proboscis, a long tongue coiled under their mouth.
True
It's body is not soft, it has an exo-skeleton