30 October, 2014


Coral Line by: Louis, Nikolas, Viggo Beecham

Coral Type: Staghorn

Coral species: Acropora muricata

Note:  6 months: One of only two lines in the nursery containing this species, and for both line 010 and this one we can see quite a high mortality rate. The reason for this is 'white syndrome', a coral disease which seems particularly prevalent in this and other fast growing species. It is possible the fast growing coral species have a trade off between immune system strength and growth rate. Their ability to cope with disease may be drastically decreased due to more energy being put into skeletal extension.

2 year update: Unfortunately this species was one of the most hard hit during the El Nino induced bleaching event in 2016. On the reef, this species was almost wiped out locally, and in the nursery it fared very poorly. You will see from the 2 year image below that most of your colonies died, however there are parts that survived (see right). These will be used to plant new lines and will hopefully spawn, producing new genetic material which is as resilient as they were during the bleaching event. You will notice the living parts are underneath the line- this is because they were shaded when bleached. Whilst bleached, corals lose some of their protection from harmful UV - We expect it was the intense sunlight whilst bleaching occurred that caused the mortality for the rest of the line. This is useful information for us, because we know now that shading the nursery more effectively during bleaching periods could save a lot of coral. Luckily, this is a fast growing species, so we hope to see recovery quite quickly. For more information visit our bleaching page.


Coral Line by: Louis, Nikolas, Viggo Beecham

Coral Type: Bushy

Coral species: Acropora plantaginea

2 year update: We can see from the picture, that a few of the colonies in the foreground died- this was caused by the El Nino induced bleaching event in 2016. To learn more about the bleaching head to our bleaching page. Having lost over 80% of coral on our house reef, to lose just a few colonies on this line was great. The majority of the line survived well and will be incredibly important for recovering our damaged reef. The lines were left in the nursery during the warming period so as not to induce any extra stress. 


Coral Line by: Louis, Nikolas, Viggo Beecham

Coral Type: Digitate

Coral species: Acropora nasuta

Note: An incredibly beautiful coral with bright purple tips, this one is growing at a growth rate of 15mm per quarter and has a survival rate of 68%. It is strange that the first 31 fragments in the line are all alive and healthy, whereas 18 out of the last 25 fragments have unfortunately died. The line became infected by white syndrome- a coral disease- and this is likely the cause of most of the mortality. Since then, the line has stabalised and is growing really well!

2 year update: Whilst i have not been able to update your graph (coming soon!!) I am so happy to report that this is still an excellent line! During the El nino induced bleaching event of 2016, we lost more than 80% of the coral on our house reef. We made the decision to leave the lines in the nursery so as not to induce any extra stress on the colonies during this delicate time. We moved the lines a little deeper, as you can probably tell from the picture. As a result, you will see that the more shallow (therefore warmer) ends of the lines actually died, whereas the middle parts (deeper and cooler) fared much better. Your survival rate will have dropped again by a little, but the colonies that are still alive are growing beautifully. See right for a few photos. It is interesting to compare your line with line 025, which is of the same species and suffered from the same disease, but completely bleached and died. Your line is now the only place I have seen this species alive in the local area since the bleaching event, so these colonies are very important to re-seed our damaged reef. We hope they will spawn soon, providing new genetic material that we hope will possess the same resilience that this genotype clearly has against warming events- making for a stronger reef in the future! Some colonies from your line were sent to the Four Seasons resort at Kuda Huraa to kick start their re-growth program as they had no Acropora nasuta at all. 

27 October, 2014


Coral Line by: Sasha Stack

Coral Type: Branching

Coral species: Acropora hemprichii

Message: "Please help Vaidas build the coral at Gili "

On the photograph depicting the line at 9 months, you will notice 2 white corals. We know these are both recently dead because we can see the bright white calcium carbonate skeleton which grows beneath the brown coral tissue. The cause of death is unknown, but because no algae has started to grow on the skeleton yet, we know the entire colony died at the same time, this was not gradual mortality. Possibly caused by bleaching due to an unknown stress factor. 

26 October, 2014


Coral Line by: Mr and Mrs Petrone

Coral Type: Table

Coral species: Acropora hyacinthus

Message: "Honeymoon 2014!"

2 year update: We are sorry to report that this was one of the lines hit hardest by our 2016 El Nino bleaching event. I was so sad to see this line bleach as it was one of our largest and had excellent survival rates. You will see from the picture, mass mortality occurred on this line, which is the same for all lines of this species and all colonies on our house reef. This species was the one that was hit hardest and died first- it clearly does not cope well with increases in water temperature! On a happier note, several of your colonies did survive, and these are really important now to help re-seed the population of Acropora hyacinthus on our damaged reef. We hope they will spawn soon, providing more genetic material, and as these colonies survived the warming period, we hope their offspring will contain the same resilience they had, make our reef stronger for future warming events! Find pics of the survivors on the right! To find out more visit our bleaching page and for any questions, please don't hesitate to email us on deborah.burn@gili-lankanfushi.com


Coral Line by: Chris and Amanda Wade

Coral Type: Table

Coral species: Acropora millepora

2 year update: This was one of the unfortunate lines that was hit hardest during the 2016 El Nino bleaching event. I was really upset to see this line die as it was one of our most beautiful with excellent survival. It seems that this species does not cope well with warmer water, as on our reef, it was also one of the first to die. The happy news is that one tiny part of the line survived and has since started growing! Check the little picture on the bottom right of the 2 year shot. We will continue to monitor this little survivor as it is now a really important colony for the survival of its species in our local area. Hopefully it, along with any other strong survivors, will spawn soon and our reef will be reseeded!  For any more information your can visit our bleaching page or email me at deborah.burn@gili-lankanfushi.com 

Taking Care of the Reef: