Carl's actually a small organism a

little jellyfish the animal that lives

with with the relationship with the

plant inside of it now that plant

actually feeds the coral through

photosynthesis but it gives the coral

the color coral bleaching is when the

environment gets stressful for the

combination that little our animal

jellyfish animal and the plant and the

coral animal actually kicks out the

plant so it loses all of color and what

we see is the underlying skeleton color

of the white the limestone and that's

coral bleaching egg so one of the events

that actually caused coral bleaching is

a variety of them that actually calls it

the main one and the most popular known

p1 is sea temperature the rate at sea

temperature change but high UV is also

another example that stresses out the

coral and that little plant is used in

theory as well as freshwater I don't

know these three main events if they not

in balance with what the corals and the

plant's life the whole little

relationship gets very very stressed out

and it breaks up for a short period and

that's when the actual plant starts to

cause toxins in the jellyfish coral

polyp animal and the coral actually

kicks it out and loses all its color so

we call it bleaching it's as if we

poured household leaf over lovely nice

blue shirt


coral is not dead once in speech its own

struggle Street it's not entirely happy

because it gets 90% of its food and its

energy requirements from the plot it

lives with it but it's still surviving

the most information out that corals

actually need to bleach to survive in

the stress event when the environment

gets unfavorable in the plant actually

causes toxin which they have to get rid

of or else the coral will die so if the

cold doesn't bleach it'll actually die

but it's a bit of a rock and a hard

place because if you stay in the

relationship you will die if you bleach

your may be done but complete cold is

not dead cold but they can survive

nearly three months without that algae

when it's recovering it's not a it's not

a fact of you bleaching your nan which

the whole process is kind of in stages

so when it's recovering you start seeing

the color returning your coral scape is

beautiful for wrestling colors to them

and in a start getting the natural

colors as time goes on you start getting

the natural colors coming back in your

beautiful autumns your mustard your

olives your brown but as we're getting

to that recovery you go through this

beautiful transition from bright white

through all these shades of colors to

daniel natural natural coral colors from

there it's actually quite a spectacular

and beautiful scene to see it happening

over a couple of weeks as their

conditions improve


the last year we had a mass coral

bleaching event which was gone through

all the media what we missed witness off

the reefs from Cannes and Northwest is

around about 50% of life coral colors

showed signs of bleaching the media

coverage of the bleaching event was

rather alarming it was a bit disturbing

to begin with because they were

highlighting that the reefs is dead and

that it is nothing left of it and what

is left of it it's going to be gone and

it was a lot of misinterpretation of the

SAS the scientists and surveyors were

finding out of the situation the big one

that hit it was 93% of the reef was

bleached and when the real information

was 93% of reefs that were surveyed

showed signs of bleaching and they serve

at that by an aerial survey traveling at

about 180 knife to 350 feet now what you

got to understand the Great Barrier Reef

and coral reefs around the world bleach

naturally it's a natural process that

they go through and most retail it'll

but every single year last year was what

we call a mass bleaching event so you

saw about 50% on the live corals showing

some size or in some stage of coral

bleaching some from completely bleached

to some just showing little bits of tips

bleaching or little spots on it channels

over a wider area than usual so

extending create mainly in the final

reaches of the Great Barrier Reef what

made it different we had the El Nino

last year around the bleaching event

what's strange about El Nino has

actually cooler sea conditions so

everyone's going to the beach because of

the high sea temperatures what actually

happened with the calmer more stable

weather conditions that are associated

with El Nino is we had a higher UV

coming through very little cloud cover

so coral them a little algae living with

the coral polyps we're getting stressed

with that high UV so the majority of the

bleaching was happening in the top six

meters and then impacted on a wider

variety of species and it was poor

longer period so that's what made the

slightly different to previous years

these mass bleaching events have been

seen all around the world and it has

actually occurred before

on the great Barry one of the main ones

are stuck out to us is the one in 1998

that was also considered a mass teaching

event someone asked me is the battery's


it's a trick you only answer because

people are very passionate about it to

be honest my first answer straight up

coal hot no the Great Barrier Reef is

healthy and people get taken aback by

that to begin with because everything we

hear is about its demise and it's dead

right so no the Great Barrier Reef is

not dead it is experiencing more and

more pressures due to climate change

which is the natural places which we are

exacerbating through our fossil fuels

and coal and all that but at the stage

of it is now the grief is still

maintaining itself we are seeing the

trend towards a reef that is going to be

under more and more pressure but

currently it is still in a good good


so the positive things that have

happened off to this mass coral

bleaching event that has been extremely

against what people assignment is in

extremely good coral spawning event they

thought with the mass bleaching events

the coral wouldn't do so else there's

mass for new event is showing that the

color is healthy and it's wanting to

breed and reproduce class we've also

been seeing more and more sightings of

manta right has such as of wild shocks

but fantastic cuttlefish reading season

trigger fish have been reading it's

actually in a really strong breeding

season right off to the coral reef

bleaching event showing that the

ecosystems rebounded and recovered

extremely well which is the site that it

is doing well so we need to keep

protecting it so it stays in that

position rather than thinking it's too

late to come to the great Barry