Scaly-foot snail (or Chrysomallon squamiferum) is otherwise known as Sea Pangolin. It has become the 1st marine species to be assessed as officially endangered due to potential threat of deep sea mining.

• It is found at 3 hydrothermal vents in Indian Ocean, east of Madagascar.
• It was recently added by International Union for Conservation of Nature (IUCN) to its updated Red List of Endangered Species.

A hydrothermal vent is a fissure on seafloor from which geothermally heated water issues and when this happens, hot water mixes with cold seawater thus depositing minerals such as copper and manganese on ocean floor.