How can I visualise APIS data for long features such as a river?

The data available on APIS can be found at on the UK Centre for Ecology and Hydrology's Environmental Information Data Centre (EIDC). This can then be loaded into a mapping or geographical information system tool to view the data over large features.

For GIS files for protected sites across the UK you can visit JNCC’s data pages for SAC and SPA sites. For A/SSSI GIS files you can obtain them from the individual agency websites.