Address: Window on Wild Lindisfarne, Holy Island of Lindisfarne
The the Natural England Visitor Centre on the main route to Lindisfarne Castle. Can be found on the left hand side overlooking the area of wetland and opposite the harbour across the Ouse. Grid Reference NU129419
Before I answer that question, here is a little bit of background information from a manuscript fragment recently discovered in an obscure roman outpost at Ecclesia Novum-Oppidum near to the Fluvium Collegium (surprisingly close to where I live!) and published in the journal Falsus Nuntium.
This project, which was completed during 2015 organised by the Howick Heritage Group and supported with HLF funding, delivered a book, some educational work with a local first and middle school and a series of walks and talks. In this section of geo-diversity resources you can have a look at the presentation given for the walks and talks as well as much of the material which was used in the educational work including lesson plans, activities and exercises. There is also a handy guide to fossils to be found on the beach at Seahouses (and elsewhere on the coast).