潜る

1. Origins, structure, and basic meaning

• Structure: 潜る (もぐる) is an intransitive verb for going beneath or inside something; both examples use connective 潜って.
• Basic usage: 海に潜って means diving below the water, while 布団の中に潜って means burrowing under the bedding.

2. Common pitfalls and similar expressions

• Diving into water and burrowing under cover
  • Both examples use 潜って, and に marks the area entered. The setting determines whether English calls the movement “dive” or “burrow.”