beach river rocks sand sea sky summer water waves coast dunes barefoot barefooted damp-beach-sand direction evidence feet foot footprints grains grainy gray grey heavy human impressions indented light not-alone parallel patterns prints rough shadows textures toes tracks charity helpers level levelling levels men at work not-for-profit paving paving slabs preparation preparing preparing sand rail rake reflections shovel slabs steps voluntary volunteer workers volunteers work workers background floor nature photo sandy stock texture desert Geological phenomenon Gran Canaria landscape yellow ocean playa shore bay ecosystem environment habitat organism Soil auger shell auger snails augur shells corals gastropod Incredible India India krayker mantle marine gastropod mollusks mollusc Mollusca Molluscs mollusks sand-dwelling carnivores seashell shells sun and sea Terebridae venomous barb coastline pebble pebbles polished rock rocky round stone stony sundrocks wet