Oceanpedia  /  Habitat


Understand the cays, zones and inhabitants of our open oceans, supported by coral reefs and mangroves alike.

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10 Videos

1m 36secs

What are coral reefs?

Learn about the composition of coral reef structures and the relationship between plant and animal that allows corals to build such impressive fortresses.

1m 34secs

Geological history of coral reefs

Reflect on the 18 million-year history of the world’s largest reef system, including the effects of the most recent ice age on reef formations in the GBR.

2m 4secs

Reef types

Discover how and why the Great Barrier Reef’s fringing, ribbon, platform and patch reefs are formed.

2m 10secs

Island types

Learn about coral reef islands, continental and high islands, coral cays and sand cays which all rely on the input of nutrients from surrounding oceans.

0m 52secs

Importance of coral reefs

Realise the ecological importance of coral reefs for open ocean, reef and coastal species, and the benefits they provide humans.

1m 12secs

Open ocean

Refine your knowledge about the zones, inhabitants and planktonic community of the open ocean.

1m 32secs

What are mangroves?

Discover what mangroves are, where they grow and how some 65 species contribute to the livelihood of the marine ecosystem.

1m 59secs


Realise the ecological and economic importance of mangroves – a critical habitat, nursery ground and storehouse for many species.

0m 49secs


Find out what seagrass looks like, where it typically grows and how it supports an enormous array of marine life.

1m 26secs

Inter reefal habitat

Learn more about lagoons, hard substrate and continental shelf which comprise the majority of coral reef habitats.

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