Corals are soft-bodied animals related to sea anemones or jellyfish that get their vibrant colors from algae. They use tentacles to feed and form reef structures over time. The largest reef is the Great Barrier Reef in Australia, which covers 1% of the ocean floor and is home to 25% of marine creatures. When corals become stressed, they eject the algae living in their tissues, appearing bleached white and signaling pollution issues, while their limestone skeletons are like tree rings preserving data about past ocean conditions.

1. 10 things you should
know about coral
reefs

2. 1- corals are animals
• Coral polyps are soft-bodied organisms related
to sea anemones or jelly fish.

3. 2- the largest reef is the great barrier
reef at Australia.

4. 3- It covers 1% of ocean floor.

5. 4- Home to 25% of marine creatures.

6. 5- Corals are translucent
• They get rainbow of colors from algae and
zoothanlea.

7. 6- using tentacles for feeding habits.

8. 7- when coral stressed, it evicts algae
and considered to be indicator about
pollution.

9. 8- coral bleaching revealing white
skeletons of corals.

10. 9- corals provide window to past.
• Corals layer are like trees ring, collecting data
from it, gives data about ocean status (climate
conditions).

11. 10- corals has limestone skeleton,
forming colonies and then whole reef.