Complex sentence: The Pukao Seamount is a submarine volcano, the most westerly in the Easter Seamount Chain or Sala Y Gomez ridge to the east are Moai (Seamount) and then Easter Island.
Split into simpler sentences: The Pukao Seamount is a submarine volcano, the most westerly in the Easter Seamount Chain or Sala Y Gomez ridge. To the east are Moai (seamount) and then Easter Island.