But some animals on Earth can live for hundreds ... Black corals, unlike some corals living in shallow coral reefs, live in deeper parts of the ocean, which helps to account for their long lifespan.

Of course, the cows themselves are prey to other animals, like humans and ... jeopardizing the living coral that makes up reefs. Covered with long, venomous spikes, the crown-of-thorns starfish ...

Certain creatures like the black corals and tuatara have been thriving on Earth since centuries. In the animal kingdom, most of the longest-living species are found in the oceans.

Giant clams, some of the largest mollusks on Earth, have long fascinated scientists. These impressive creatures can grow up ...

individual coral reefs, and every one of them is in a different condition. Narrator: It's also the world's largest living structure as well as a home to thousands of plant and animal species.

complex and living ecosystems that are often called the rainforests of the sea. Like tropical rainforests, coral reefs provide life and habitats for an array of plants and animals. The underwater ...

Corals are animals, but many are powered ... which over time builds the fabric of the reef. Coral reefs are like cities under the sea. The structure of the living corals themselves provides ...

Just as the world’s zoos breed critically endangered animals in captivity to repopulate ... now to help reseed the oceans and restore living reefs. Cryopreservation is a process for freezing ...