As per normal human thinking it is impossible to build a bridge on sea.
Then how could Nala, a mere vanara, build the Rama Setu across the sea?
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Sign up to join this communityIn Ramayana, almost all Vanaras are the incarnation or Ansha of some deity and so was the Nala. Nala was the son of Vishvakarma (the divine architect) and he had a boon of his father. It is described in Yuddha Kand, Chapter 22 as:
अयम् सौम्य नलो नाम तनुजो विश्व कर्मणः | पित्रा दत्त वरः श्रीमान् प्रतिमो विश्व कर्मणः || २-२२-४४
O, excellent man! This one, named Nala, a glorious person, is the son of Vishvakarma; who was given a boon by his father and is equal to Visvakarma.
एष सेतुम् महाउत्साहः करोतु मयि वानरः | तम् अहम् धारयिष्यामि तथा हि एष यथा पिता || २-२२-४५
Let this greatly energetic monkey build a bridge across me. I can hold that bridge. He is just the same as his father.