Marine worms will be collected and compared from 2 locations in Mount Sinai Harbor. The health and diversity of the worms from the sediments in the northern sampling site which borders an active marina will be compared to those found in the less human-impacted site within the salt marsh community. Water sampling data (pH, temperature, salinity, phosphates, nitrates, ammonia, sulfates) may indicate the overall health of each of the different environments where the worms are located.