Sand and gravel extraction from rivers and coasts destroys habitat for aquatic and shoreline animals at enormous scale, creating welfare harms that are largely invisible.
Sand extraction welfare harms occur at ecosystem scale but affect individual animals across many species. River dredging physically destroys fish nests, removes invertebrate-rich substrate, and increases turbidity that impairs fish feeding and breeding. Beach sand removal eliminates nesting sites for piping plovers, sea turtles, and other shore-nesting species. The cumulative welfare impact of global sand extraction, concentrated in biodiverse tropical river systems, affects billions of individual animals. Sustainable sand extraction practices including in-stream flow maintenance, seasonal restrictions during breeding, and habitat restoration requirements reduce but cannot eliminate these welfare costs.