remains of an ancient dam from the 18th century, when salt was mined in the kuyalnik estuary

anostraca artemia salina black silt branchiopoda curative ecology eggs europe fauna exoskeleton hydrobiology hypersaline invertebrate kuyalnik kuyalnitsky estuary landscape malacostraca mud organisms salt lake pools water salty shore sodium chloride therapeutic wildlife arthropoda brine crawfish crayfish crustacea dead halophiles hydroorganism hyperhaline wild footmarks coast