Other examples of the unique fauna who inhabit this ecosystem are the gastropod Crysomallon squamiferum , a species of snail with a foot reinforced by scales made of iron and organic materials , and the ` Pompeii Worm ' Alvinella pompejana , which is capable of withstanding temperatures up to 80 Â C ( 176 Â F ) . Other examples of the unique fauna who inhabit this ecosystem are scaly-foot gastropod Crysomallon squamiferum , a species of snail with a foot reinforced by scales made of iron and organic materials , and the Pompeii Worm Alvinella pompejana , which is capable of withstanding temperatures up to 80 Â C ( 176 Â F ) .