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Sea-based blowhole Land-based blowhole. In geology, a blowhole or marine geyser is formed as sea caves grow landward and upward into vertical shafts and expose themselves toward the surface, which can result in hydraulic compression of seawater that is released through a port from the top of the blowhole. [1]
The sea cave and the land surface become conjoined when the roof of the cave collapses. Blowholes are formed by the process of erosion. When waves enter the mouth of the cave they will be funneled up towards the blowhole, which can become quite spectacular if the geometry and state of the weather are appropriate.
The Alofaaga Blowholes, also known as the Taga Blowholes, are a natural feature located in the district of Palauli, south west of Salelologa wharf on the island of Savai'i in Samoa.
Closeup of Nakalele Blowhole Warning sign at Nakalele Point. Nakalele Point is a land mass on the eastern edge of the northern tip of the island of Maui in the state of Hawaiʻi. In Hawaiian, Nakalele or Nā-kālele means "the leaning". The Point is known for its blowhole and has become notable for its dangerous conditions when waves crash in.
The blowhole is most active when the tide is high and the winds are strong, [3] and it can shoot sea spray up to thirty feet high in the air. [4] Hālona Point is a tourist spot, with visitors coming for the scenery, the beach at the cove, and in the winter as a spot to go to see humpback whales or Honu turtles (Hawaiian Green Sea Turtles).
Spouting Horn is a blowhole located on the southern coast of Kauai in the Koloa district. This area of Kauai is known for its crashing waves (nearby Poipu translates to "crashing" [1]). These waves erode lava rocks on the coastline which can create narrow openings, as is the case with Spouting Horn.
Blowhole may refer to: Blowhole (anatomy), the hole at the top of a whale's or other cetacean's head; Blowhole (geology), a hole at the inland end of a sea cave Kiama Blowhole in Kiama, Australia; The Blow Hole, a marine passage between Minstrel and East Cracroft Islands in the Central Coast of British Columbia, Canada
La Bufadora is often considered a marine geyser, [1] however, it does not have a thermal source or cause, as geysers do. In this case, the spout of sea water is the result of air, trapped in a sea cave, exploding upwards.