The exports stood at $177 million in April last fiscal, according to the figures released by the Marine Products Export Development Authority (MPEDA).
"There is a slowdown in demand from the Japanese market due to the recent earthquake and tsunami," an MPEDA official said.
India's marine exports include black tiger shrimp, fresh water prawn shrimp, frozen versatile fish, frozen skip jack and frozen squid and the consignments are mostly from Maharashtra, Kerala, Tamil Nadu and West Bengal.