Layer Estimates:

Layer: Current Seashore (ID:0)
Count: 3953
Extent:

XMin: -20037507.0672
YMin: -20602629.0684
XMax: 20037507.0672
YMax: 18418382.2189
Spatial Reference: 102100 (3857)

Layer: Ocean Extent (ID:1)
Count: 4504
Extent:

XMin: -20037507.8427882
YMin: -30239028.5416139
XMax: 20044145.8063527
YMax: 30236208.9488613
Spatial Reference: 102100 (3857)