Debris from damaged buildings is seen around a swimming pool near a beach in Anyer, Serang, Indonesia, after the area was hit by a tsunami on Dec. 22, 2018,  following an eruption of the Anak Krakatau ("Child of Krakatoa") volcano.

This aerial photo shows the Anak Krakatau ("Child of Krakatoa") volcano erupting in the Sunda Straits off the coast of southern Sumatra and the western tip of Java. Volcanic activity triggered a tsunami that killed hundreds on Dec. 22, 2018.

An aerial photo shows damaged buildings in Carita, Indonesia, on Dec. 23, 2018, the day after the area was hit by a tsunami.

Indonesian police rest near debris of a building after hit by a tsunami during a search at a resort hotel on Dec. 24, 2018 in Carita, Banten province, Indonesia. 

Damaged buildings on Dec. 24, 2018 after being hit by tsunami at a hotel resort in Carita, Banten province, Indonesia. 

Villagers walk through debris after the area was hit by a tsunami in Carita, Banten province, Indonesia. 

A woman looking for her belongings at a house hit by a tsunami in Carita, Banten province, Indonesia. Hundreds were reported killed after a volcano-triggered tsunami hit the coast around Indonesia's Sunda Strait on Dec. 22, 2018.

Damaged cars piled up outside a damaged building after being hit by tsunami in Carita, Banten province, Indonesia.

A man stands on debris of a house on Dec. 24, 2018 two days after a tsunami struck in Carita, Banten province, Indonesia. 

A man takes a picture of damaged cars and buildings after a tsunami struck the area in Carita, Banten province, Indonesia. 

A plume of ash rises as the volcano Anak Krakatau ("Child of Krakatoa") erupts in Indonesia, Dec. 23, 2018, in this image taken from video on social media.

A map showing the area of Indonesia's coastline struck by a tsunami following volcanic activity at Anak Krakatau ("Child of Krakatoa") volcano.

Debris is seen after a tsunami hit the area in Pandeglang, Banten province, Indonesia, Dec. 23, 2018.

A worker lifts up a head of destroyed statue at the beachfront hotel which was hit by a tsunami in Pandeglang, Banten province, Indonesia, Dec. 24, 2018.

A damaged car is seen inside a destroyed building on Dec. 24, 2018 after being hit by tsunami in Carita, Banten province, Indonesia. 

A sign directing to a tsunami evacuation route is seen after a tsunami hit the area near Carita in Pandeglang, Banten province, Indonesia, Dec. 24, 2018.

A man reacts after identifying his relative among the bodies of tsunami victims in Carita, Indonesia, on Dec. 23, 2018. 

A woman taking pictures of debris with her smartphone following a tsunami in Carita, Banten province, Indonesia. 

A man stands amid debris at his house which was hit by the tsunami in Pandeglang, Banten province, Indonesia, Dec. 24, 2018.

Aerial view of damage after a tsunami hit the coast of Pandeglang, Banten province, Indonesia.

Rescue workers prepare to search an underground space for victims of the tsunami at a resort hotel on Dec. 24, 2018 in Tanjung Lesung, Indonesia. 

Two children walk through debris after a tsunami on Dec. 24, 2018 in Carita, Banten province, Indonesia.

Rescue workers recover the body of a victim of the tsunami during a search at a resort hotel on Dec. 24, 2018 in Carita, Banten province, Indonesia.

An aerial view of an affected area after a tsunami hit the coast of Pandeglang, Banten province, Indonesia, Dec. 24, 2018.

Bodies of tsunami victims are collected at a local health facility after a tsunami hit Carita in Pandeglang, Banten province, Indonesia, Dec. 23, 2018.

Rescue workers recover the body of a victim of the tsunami during a search at a resort hotel in Carita, Banten province, Indonesia.

Villagers search through debris of their houses on Dec. 24, 2018, after a tsunami that killed hundreds in Carita, Banten province, Indonesia. 

A woman and her son amid debris on Dec. 24, 2018 following a tsunami in Carita, Banten province, Indonesia. 

Residents of Bandar Lampung, Indonesia, rest at a government building after they evacuated following a tsunami, Dec. 24, 2018.