Now Playing: Saudi Arabia finally acknowledges death of Jamal Khashoggi

Now Playing: Saudi Arabia announces Khashoggi was killed during a ‘fistfight’

Now Playing: Images appear to challenge Saudi narrative of journalist’s killing

Now Playing: Video: Friends seen celebrating in Costa Rica before deadly capsizing

Now Playing: Trump: Migrant caravan traveling toward US ‘national emergency’

Now Playing: Migrant caravan headed to US grows to 7,200: UN official

Now Playing: Former professional surfer head-butts shark to possibly save life

Now Playing: The president calls migrant caravan a national emergency

Now Playing: Harry and Meghan visit Queensland’s Fear Island

Now Playing: Caravan of thousands of migrants push deeper into Mexico

Now Playing: President calls out Saudis for ‘deception’ and ‘lies’

Now Playing: Catrinas Parade, running of the clowns, field of fireweed: World in Photos

Now Playing: Saudi Arabia’s claim about assassinated journalist changes again

Now Playing: Prince Harry hopes pregnant wife Meghan Markle has a girl

Now Playing: Inside the caravan of migrants en route to US border

Now Playing: Saudi officials change explanation of Khashoggi’s death

Now Playing: 5 dead, including 4 Americans, in Costa Rica rafting accident

Now Playing: Thousands of migrants head toward the U.S.-Mexico border

Now Playing: Saudi Arabia faces backlash for the death of Jamal Khashoggi