Pity the poor shrimp or lobster, approaching the final moments of its life, only to find themselves in a coarse net. The snobbish among them might look down their antennae and think 'couldn't it have been a wool net, perhaps, or linen?'.
We're inclined to agree with them. They have minutes before they get cooked in a pot, yet they don't receive the simple courtesy of a comfy net. When you're on your deathbed, we'll wrap you up in a coarse net and see how you like it.