The death of fisheries, shrimps in particular, off Mukalla, Hadhramout coasts is a phenomenon caused by natural factors, the Yemeni internationally-recognized ministry of fisheries has said.
Shrimp flocks have undergone a sudden change in temperature and low oxygen at depths of 100-150 meters, according to a report commissioned by the ministry.
Shrimps perish in large groups during daily upright migration because of fatigue as resisting such a change, the report read.
Yemeni Fishery Minister Fahd Kafien ordered the formation of a committee to examine the sudden death of shrimp in the Arabian Sea.
Thousands of shrimps were found dead along Mukalla coast last Wednesday, said local fishermen and residents, calling for official investigation to avoid environmental and health impacts.
Abdullah bin Hamdeen, Yemeni sea biologist, has said deep, strong currents, accompanied by sudden change in temperature, push shrimp flocks out of their normal course and cause their death.
Shrimps perish when temperature goes below 12 centigrade or a natural virus spreads in sea, he added.
Last year, the Yemeni eastern coast of Mukalla saw fish perishing in large numbers, with the fishery minister attributing the event to unfair, illegal fishing.
Yemen has 2500-km coastline overlooking the Red and Arabian seas and allowing for annual fishing of up to 400,000 tons. Yemeni fisheries come second after oil in the country's GDP, and its revenues form a significant source for attracting foreign currencies.