Aquascape Environmental
Consulting and contracting services for lakes, streams, and wetlands. Southeastern U.S.A.

Quinlan Consulting
Consultancy and research; site has several technical papers on topics in aquatic ecology, water management, and river restoration. Based in UK.

Physalia Ocean Sciences, Inc.
Consulting coastal and marine science and engineeering firm. Assessment of environmental impacts associated with coastal resource development projects. USA, Japan, Thailand.

Freshwater Benthic Services
Macroinvertebrate identification services for freshwater environments in the United States.

Environmental Consulting Associates
Management of private lakes and ponds. Florida, Alabama, Georgia (USA).

Ecovista
Professional services in assessment and planning at watershed, subbasin and ecosystem scales. Location: Washington State (USA).

Blue Planet Environmental
Consulting in marine and freshwater aquatic ecosystems. Located Quebec, Canada.