Colony of yellow Tunicates, Caribbean Sea, Dominica

Stalked Green Ascidian, Oxycorynia fascicularis, Komodo National Park, Indonesia

Stalked Green Ascidian, Oxycorynia fascicularis, Komodo National Park, Indonesia

Stalked Green Ascidian, Oxycorynia fascicularis, Komodo National Park, Indonesia

A beautiful set of tiny tunicates grows on a reef in Indonesia.This tropical region, within the Coral Triangle, is home to an incredible variety of marine life.

Detail of a colonial tunicate growing on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

Detail of a colonial tunicate growing on a coral reef in Komodo National Park, Indonesia.

A cluster of colorful tunicates grow on a coral reef amid the remote, tropical islands of Raja Ampat, Indonesia.

A beautiful bouquet of tunicates and cnidarians grows on a reef in Komodo National Park, Indonesia. This tropical area in the Lesser Sunda Islands is known for both its amazing marine biodiversity as well its infamous dragons.

Colony of tunicates grow on a reef in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

Colorful tunicates and soft corals grow on a reef in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

Giant Sea Cucumber Parastichopus californicus

Colony of ascidians (sea squirts) (Didemnum molle), Monkey beach, Puerto Galera, Mindoro, Philippines, Southeast Asia, Asia

Sea Squirt Clavelina robusta

Diver and encrusting sponges and ascidians, St. Peter and St. Paul's rocks, Brazil, South America

Ascidian (Pycnoclavella diminuta), Lapus Lapus Island marine park, Malapascua, Cebu, Philippines, Southeast Asia, Asia

Encrusting sponges and ascidians, St. Peter and St. Paul's rocks, Brazil, South America

Ascidian next to yellow and red encrusting sponges, West Escarceo, Puerto Galera, Mindoro, Philippines, Southeast Asia, Asia

Seasquirt Polycarpa aurata

Scorpionfish, Scorpaenopsis sp., rests on the bow of the Fujikawa Maru encrusted with sponges corals and ascidians, Truk lagoon, Chuuk, Federated States of Micronesia, Caroline Islands, Micronesia, Pacific Ocean, Pacific

Polycerid nudibranch, Nembrotha cristata, external gill detail, Puerto Galera, Mindoro, Philippines..

Ascidian, Didemnum molle, oscule detail, Dauin, Negros, Philippines.

Ascidian colony, Clavelina robusta, Gato Island, Cebu, Philippines.

Chamberlain's Nembrotha Nudibranch feeding

Colony of Tunicates, Clavelina robusta, Raja Ampat, West Papua, Indonesia

Healthy Coral Reef, Raja Ampat, West Papua, Indonesia