Freshwater Benthic Services - Macroinvertebrate identification services for freshwater environments in the United States. - http://my.freeway.net/~mwinnell/
Physalia Ocean Sciences, Inc. - Consulting coastal and marine science and engineering firm. Assessment of environmental impacts associated with coastal resource development projects. USA, Japan, Thailand. - http://www.physaliaos.com/
Aquascape Environmental - Consulting and contracting services for lakes, streams, and wetlands. Southeastern U.S.A. - http://www.aquascape.net/