page_title: Eltanin Antenna
hierarchical_section_title: Eltanin Antenna
context_page_description: The Eltanin Antenna is an object photographed on the sea floor by the Antarctic oceanographic research ship USNS Eltanin in 1964, while photographing the sea bottom west of Cape Horn.
  Due to its regular antenna-like structure and upright position on the seafloor at a depth of 3,904 metres, some proponents of fringe and UFO-related theories including Bruce Cathie have suggested that it might be an extraterrestrial artifact.
  Other authorities have suggested that the object photographed by the Eltanin was an unusual carnivorous sponge, Chondrocladia concrescens.
context_section_description: The Eltanin Antenna  is an object photographed on the sea floor by the Antarctic oceanographic research ship USNS Eltanin in 1964, while photographing the sea bottom west of Cape Horn.
  Due to its regular antenna-like structure and upright position on the seafloor at a depth of 3,904 metres (12,808 ft), some proponents of fringe and UFO-related theories including Bruce Cathie have suggested that it might be an extraterrestrial artifact. 
  Other authorities have suggested that the object photographed by the Eltanin was an unusual carnivorous sponge, Chondrocladia concrescens (formerly Cladorhiza concrescens).
caption: USNS Eltanin photo (1964)
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