A Japanese submarine and two destroyers are making a port call in southern Vietnam in an apparent show of force against China's maritime activities.

Japan's Maritime Self-Defense Force deployed a marine fleet, including the country's largest destroyer Kaga, in September to waters in the South China Sea and the Indian Ocean.

A group of Japanese researchers have discovered a new species of marine worm in the bay where Tokyo Olympic triathlon events are scheduled.

Researchers from the National Institute of Polar Research and Toho University said they discovered what they believe to be a new scavenger species of Ophryotrocha worm.

The Swift Sport Katana Edition might have been the star of Suzuki's Tokyo Auto Salon lineup, but the company also brought a host of other vehicles.