Layer Estimates:

Layer: Areas At or Below Mean Sea Level (ID:0)
Count: 1
Extent:

XMin: 626345.5034
YMin: 306144.090399999
XMax: 653206.3873
YMax: 329334.1383
Spatial Reference: 27700 (27700)

Layer: Areas At or Below Mean Sea Level (2) (ID:1)
Count: 1
Extent:

XMin: 627950.0005
YMin: 289950.0019
XMax: 653421.263
YMax: 308610.000600001
Spatial Reference: 27700 (27700)