A colony of green barrel sea squirts (Didemnum molle), out over the reef off Bangka Island, Indonesia, Southeast Asia, Asia

horizontal color image travel destinations travel outdoors day no people indonesia southeast asia asia wildlife sea water underwater green barrel sea squirt bangka island coral reef tropical climate coral manado focus on foreground selective focus one animal animal close up wild animals in the wild travel destination tourist destination tourist destinations differential focus depth of field seas ocean oceans outdoor outside nobody no one no person daytime animals