Officials in New Delhi say that an Iranian warship that was sunk by a U.S. submarine near Sri Lanka had participated in naval exercises hosted by India before heading out into international waters in the Indian Ocean on its way home.

IRIS Dena, the Iranian warship torpedoed by the United States in the Indian Ocean, has raised questions about who controls the vast expanse of waters and to what extent.

In September 1979, a US Vela satellite detected a mysterious "double flash" over the Indian Ocean - a signal scientists associate with nuclear blasts.

The U.S. military says it's boarded another sanctioned oil tanker in the Indian Ocean. The Pentagon said in a statement Sunday that U.S. forces boarded the Veronica III after tracking it from the Caribbean Sea.

Genetic evidence confirms Seychelles crocodiles were saltwater crocodiles capable of long-distance ocean dispersal, with a historic range exceeding 12,000 kilometers (~7500 miles).

March 5 (Reuters) - Shipping company MSC said on Thursday it would implement a "war surcharge" for cargoes moving to African nations and Indian Ocean islands from the Indian subcontinent and the Gulf countries,