‘One degree rise can destroy fish on the entire coral reef'

The distribution of fishes on the east coast and the west coast was affected badly. The sardines and mackerels, which were found in Karnataka and Kerala coast, were now distributed up to Gujarat and Pakistan, said Vivekananda, well-known marine scientist.

Addressing a seminar on cage fishing, he said the climatic changes, change in the direction of the wind and the change in the temperature had affected the fishes and the fishes were moving from one place to another, he said.

In the coming days, the other fishes too moved from one region to another in the coming days. The poisonous Puffer fish, which were rare, were growing rapidly and the liver of this poisonous fish was being exported to Japan.

The climatic change had affected the egg-laying by fishes and the changes would seriously affect the production of the fishes in future, Mr. Vivekananda said. The sea erosion on the west coast of India was a cause for worry, he said.

The rise in the temperature of the sea had affected the coral reef at many places. The coral reefs which housed the rare fishes and mammals in the sea were on the verge of “bleaching” (destroy), he said. One degree rise in sea temperature would destroy entire coral reef, he said.

The coral reef in the Netrani Island near Bhatkal had been brought to light by the Central Marine and Fisheries Research Institute (CMFRI) and CMFRI was taking care of the island. In India, Andaman, Lakshadweep, Rameswaram and Kutch had coral reefs and were destroyed in 2002 by the rise in sea temperature by the El Nino. Now, only a few coral reefs were left on these islands, he said.

Dr. Rajagopal, who had conducted the study of distribution of mammals in the sea, said that a study was being taken up on the dolphins, sharks and sea cows. Three new species of mammals were discovered in Indian Ocean by his study.

Dr. K. K. Phillipose, senior scientist of CMFRI, was present.


  • Poisonous Puffer fish growing rapidly
  • Sea erosion on west coast causing concern

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