
INS009-00055
The federally endangered Iowa Pleistocene Snail (Discus macclintocki). This is a relict from the last ice age, some 400,000 years ago. It lives in cold air vents on 37 different hillsides in Iowa (and one in Illinois) and survives only in the cold air that blows past underground ice and out of the cracks in limestone cliffs.
Keywords
- black background
- captivity
- Close-up
- copy space
- directly above
- discharge
- Discus
- Discus macclintocki
- federally endangered
- Iowa pleistocene snail
- Iowa snail
- macclintocki
- Photo Ark
- rare
- slime
- snail
- studio shot
- Trail
This photo © Joel Sartore 2022. Image usage guidelines

This photo is part of the Photo Ark.