Layer Estimates:

Layer: Submarine Cable Components (ID:0)
Count: 1774
Extent:

XMin: -19832469.8632
YMin: -7349298.7347
XMax: 19965122.8439
YMax: 14486750.136
Spatial Reference: 102100 (3857)

Layer: Submarine Cable (ID:1)
Count: 1272
Extent:

XMin: -20037485.8562
YMin: -7363101.3337
XMax: 20037505.1145
YMax: 14488616.6364
Spatial Reference: 102100 (3857)