83K views · 741 reactions | Once part of Scotland's coast, this 449-foot sea stack is a powerful testament to the oceans force. #history #didyouknow #scotland #geology | Ancient Star | Facebook

The sea stacks of Donegal, Ireland are a truly unique climbing challenge 🌊🧗‍♂️💪 Renowned ice climber Will Gadd tries his hand in completely new territory on this one of a kind adventure. | Red Bull Adventure

船底の「四角い穴」は魚を吸い込む？ ドックで船を横から見ると、船底付近に格子状の網がついた穴（シーチェスト）がいくつかあります。 これはエンジンを冷やすための海水を取り込む口です。網がついているのは、魚や大きなゴミを吸い込まないため。ドックではこの網を外して、中に詰まった貝殻やゴミを掃除します。ここが詰まるとエンジンがオーバーヒートして船が止まってしまうため、まさに船の「急所」のメンテナンスです。 Does the “square hole” in the hull suck in fish? When you look at a ship from the side in dry dock, you'll see several holes near the hull fitted with grid-like screens (sea chests). These are intakes for seawater used to cool the engine. The screens are there to prevent fish and large debris from