Sponge Cave, Santa Cruz Island

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Map of Sponge Cave, Santa Catalina Island

Sponge Cave, Santa Cruz Island aka Lady's Harbor Cave, was named Sponge Cave by Phil Orr for the masses of white sponges living under water in total darkness. Bunnell calls this cave Lady's Harbor Cave (p. 66):

Location: Just west of the point adjoining Lady's Harbor
Length: 400' (122 m)
Conditions: “Water-filled, can be explored with a small boat or dinghy at any tide level. However, since the entrance narrows to about 7' tall at one point a lower tide is best, particularly if a swell is running. The cave is pretty well sheltered against a west swell. Dtrong lights are needed as this is one of the darkest caves on the island.”
Description: “



  • 1951. Orr, Phil C. The Orca Goes Underground Santa Barbara Museum of Natural History Museum Talk 26(2):13-19, Summer 1951
vessel Orca; Yates Cave, West Anacapa Island; Sponge Cave, Santa Cruz Island
[original in SCIF archives]


  • 1988. Bunnell, David Sea Caves of Santa Cruz Island Santa Barbara: McNally & Loftin, (1988)
[original in SCIF archives]