Last updated at 15:53

Underwater volcano disrupts flights

To enjoy the CBBC Newsround website at its best you will need to have JavaScript turned on.
Find out why the volcano's causing problems

Flights to the island of Tonga have been cancelled after a volcano erupted, spewing ash into the sky.

Tonga is a small island in the Pacific Ocean, east of Australia.

Experts from New Zealand's GNS Science agency said volcanic activity had been recorded for a few weeks.

To enjoy the CBBC Newsround website at its best you will need to have JavaScript turned on.
How volcano pumice stones help scientists

It's thought the volcano may have started under the ocean but erupted out of the water, creating a tiny new island.

Airlines hope they can begin sending planes to Tonga again on Wednesday, as long as the ash has cleared.