Now Playing: Drone pilot captures footage of whale swimming near surfers

Now Playing: Myanmar must prevent genocide of Rohingya minority: UN court

Now Playing: Wuhan coronavirus, Jean Paul Gaultier, locusts in Africa: World in Photos, Jan. 23

Now Playing: Kangaroos watch helicopters fight fires in Australia

Now Playing: ‘Doomsday Clock’ 20 seconds closer to midnight

Now Playing: Powerful storm wrecks boats

Now Playing: Health officials confirm first case of coronavirus in Hong Kong

Now Playing: Authorities race to stop spread of coronavirus

Now Playing: Duchess Kate discusses her struggles as a young mother

Now Playing: It’s Morning, America: Thursday, Jan. 23, 2020

Now Playing: UN accuses Saudi Arabia of Amazon CEO phone hack

Now Playing: Dazzling lantern shows illuminate night sky in Lunar New Year celebrations

Now Playing: Chinese city of 11 million on lockdown amid deadly virus

Now Playing: 3 Americans killed in water tanker crash fighting Australia fires

Now Playing: Desperate search for Arizona woman who vanished in Belize

Now Playing: Saudi foreign minister dismisses Bezo hacking allegations

Now Playing: French president confronts Israeli guards in Jerusalem

Now Playing: Mitsubishi target of emissions inquiry

Now Playing: Impeachment hearing, Duchess Kate, falling iguanas: World in Photos, Jan. 22

Now Playing: Sea foam sweeps through Catalonia