Srimad Bhagavatam Canto 11, Chapter 01, Text 22

SB 11.1.22

kaścin matsyo ’grasīl lohaṁ
cūrṇāni taralais tataḥ
uhyamānāni velāyāṁ
lagnāny āsan kilairakāṁ
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
A certain fish swallowed the iron lump, and the bits of iron, carried back to the shore by the waves, implanted themselves there and grew into tall, sharp canes.
Srimad Bhagavatam Canto 11, Chapter 01, Text 21
Srimad Bhagavatam Canto 11, Chapter 01, Text 23