| Norwegian Boundary Sediment Plain MPA | |
| Relief: | 1 |
| Location: | North Sea, Scotland |
| Coordinates: | 58.0833°N 44°W |
| Area Ha: | 16400 |
| Established: | 2014 |
| Designation: | Scottish Government |
| Operator: | Marine Scotland |
The Norwegian Boundary Sediment Plain is a Marine Protected Area (MPA) lying to the northeast of Scotland. The MPA, which covers 164km2,lies at the very edge of Scottish offshore waters, close to the maritime boundary with Norway.[1] The seabed of the sediment plain consists of sand and gravel habitats, and lies at a depth of between 80 and 120 metres below sea level.[2] The sea bed supports creatures such as starfish, crabs and ocean quahogs. The latter, which are large and slow growing clams, have a lifespan of more than 400 years and are thus considered to be amongst the oldest living animals on Earth.[3]