潜水

1. Origins, structure, and basic meaning

• Structure: 潜水(せんすい) means going beneath the surface of water and appears as 潜水する.
• Basic usage: It describes underwater activity, such as an investigator inspecting a submerged boat.

2. Common pitfalls and similar expressions

• Diving and swimming
  • 潜水 focuses on going below the water's surface, while 水泳 focuses on moving through water by swimming.
• Noun and verb expressions
  • 水に潜る also means going underwater. 潜る is read もぐる.