Marine Evidence Directory
CCW has made a special effort to organize and
present its marine data in a spatial form in our Marine Evidence
Horse mussel Reef, Photo by Rohan Holt©CCW
Seagrass beds at Porth Dinllaen, Photo by Rohan Holt©CCW
Carpet sea squirt (Didemnum vexillum), Photo by Rohan Holt©CCW
Razorbills, Photo by Mike Hammett©CCW 1994
Invasive species-Portugese oyster (Crassostrea gigas), Photo by Paul Brazier©CCW
Clarach Bay, Photo by Monica Jones©CCW
Each chapter in the Directory describes the individual dataset,
highlights its value in a conservation and environmental planning
context, and provides guidance on its use.
Particular attention is also given to data confidence and
limitations. Together the chapters provide an overview of the type
of marine spatial data held by CCW.
Many of these marine datasets were developed in collaboration
with others as partnership projects. Their records and expert
assistance is gratefully acknowledged.
With growing demands on the marine environment we expect all
this data and information to be useful to a wide range of people
and organizations. However, it should also be recognized that there
are still critical gaps in our knowledge of the marine environment
in Wales. Our knowledge of the seabed is relatively poor in
comparison to our detailed knowledge of the terrestrial