animal footprints imprinted in wet coarse grained sand

coarsegrained footprints mustelidae coastline footprint particles sediments carnivore undefined imprints tracking animalia chordata lutrinae behavior stepping animals closeup grained muskrat pressed aerial animal coarse racoon rodent shadow tracks weasel weight close otter print shore sunny track gray grey sand view five paw rat sea wildlife displacement dual pair digits pads mammal mammalia racoon quartz feldspar mink pacific west coast united states environment beach north america