OneCeylon
All questions

Pigeon Island table coral morphology: Acropora hyacinthus wave dissipation and skeletal density?

Seen by 1,260 travellers
Jump to the accepted answer
K
Kenji Elasmobranch•910 rep

How do horizontal plate corals off Nilaveli absorb high-energy oceanic swell while resisting hydrodynamic mechanical shearing during storm surges?

23

4 Answers from travellers

✓Accepted Answer

The shallow reef terraces of Pigeon Island National Park are dominated by massive tabular plate corals (Acropora hyacinthus and Acropora cytherea) extending up to 2 meters across. Their broad horizontal tiers grow on stout central pedestals cemented to granitic basement rock. The table architecture acts as a wave-energy attenuator: as open oceanic swells from the Bay of Bengal cross the reef crest, the horizontal plates trip incoming waves, dissipating up to 80% of wave kinetic energy and creating a calm, sandy lagoon inshore where juvenile reef fish and blacktip sharks thrive.

38
D
Dr Dharshani NARA•1910 rep

Table corals maximize surface area for symbiotic zooxanthellae photosynthesis in shallow waters, but remain vulnerable to mechanical damage from boat anchors.

21
K
Kenji Elasmobranch•910 rep

Snorkelers must maintain horizontal trim; standing on coral tables breaks central pedestals that require over 15 years of uninterrupted calcification to regenerate.

17
C
Capt Roshan Sea•1720 rep

Under-table overhangs shelter large schools of oriental sweetlips, juvenile trevally, and resting hawksbill sea turtles during midday currents.

14
S
Sarah Field Scout•1720 rep

You must be logged in to post an answer.

Log In to Answer

Related questions

Browse all questions