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2. Oulastrea
• Common Name: Zebra
Corals
• Kingdom Animalia
• Phylum Cnidaria
• Class Anthozoa
• Subclass Hexacorallia
• Order Scleractinia
• Family Faviidae
• Genus Oulastrea

4. Oulastrea
• Conservation Status: Extant (Least
Concern)
• Colony: Encrusting Colony,
sometimes a small-boulder shape
• Corallite Formation: Plocoid
• Corallites about 0.5cm circular rings
with thick septa on a black
background

5. • Habitat: subtidal turbid water,
attached to wave washed rock
• Marine
• Ability to reproduce as a
hermaphroditic broadcast spawner
and brooder
• Average generation length: 10 years
Oulastrea

6. Major Threats:
• Physical removal of the habitat
• Global climate change
• Temperature extremes leading to
bleaching and ocean acidification
Oulastrea

7. Pavona
• Kingdom Animalia
• Phylum Cnidaria
• Class Anthozoa
• Order Scleractinia
• Family Agariciidae
• Genus Pavona

9. • Conservation Status: Vulnerable and
least concerned
• Two morphologies:
1. Presence of collines (Pavona
varians, Pavona frondifera)
2. Absence of collines (Pavona
gigantea, Pavona clavus, Pavona
maldivensis)
Pavona

10. • Habitat
1. Reefs
2. Inter-Reef
3. Shallow reefs
• Colonial: Foliaceous Colony
• Corallite Formation:
Thamnasteroid
Pavona

11. Pavona gigantea
• Polyp expansion is unique, occurring
during the day.

12. • Threats:
1. Bleaching
2. Harvesting for aquarium trade
3. Extensive reduction of coral reef habitat
4. Coral disease
5. Local threats (fisheries, human
development, pollution etc.)
6. El Niño Southern Oscillation (ENSO) events
7. Temperature extremes
8. Ocean acidification
Pavona

13. Isis
• Common name:
Bamboo coral
• Kingdom Animalia
• Phylum Cnidaria
• Class Anthozoa
• Subclass Octocorallia
• Order Gorgonacea
• Family Isididae
• Genus Isis

15. • Conservation status: Critically
endangered
• Dense, sessile branching colony
• Corallite formation: None
• Habitat: Marine; deep sea
• One of the deepest recorded occurrences
of all deep-sea corals.
Isis

16. • White solid calcium carbonate
internodes
• Brown organic nodes
• Large-sized; at most 70 cm high giving
rise to a candelabrum-shaped colony
with 45° inclination among the
branches
• Polyps are arranged on two rows, 3
mm tall, surrounded by a crown of
long sclerites
• The most easily recognized deep-
water octocorals
Isis

17. • Generation length: 35-400 years
• Geographic range: 4000-115 meters
• No uses are known for this species.
• Form wide meadows on flat or sloping
muddy bottoms.
Isis

18. • Major threats:
• Trawling activities
• Bottom line fishing
• Pollution and mineral extraction
(high silting level)
Isis

19. • References