[Coral-List] bleaching on the Great Barrier Reef (Alina Szmant)

[Bill Allison]

Of course they are dead Doug.:-)
Perhaps I should have made it clear that the algal coating at the stage
mentioned was very difficult to discern as algae with the naked eye and
quite impossible to discern as such on video even when the camera was close
to the coral. Perhaps depth and natural lighting were factors. I'll have to
check that.
Bill

On Tue, Mar 22, 2022 at 6:20 AM Douglas Fenner via Coral-List <
coral-list at coral.aoml.noaa.gov> wrote:

> If they got overgrown by algae, they are almost certainly dead.  Which fits
> with what I said that it is quite hard to tell the difference between
> bleached and newly dead, even if you are just inches from them (let alone
> an airplane).  Live tissue on a bleached coral is clear, so it is
> especially hard to see.  You see the white skeleton, just like when the
> coral is just died.  Hard to see clear tissue.
> Cheers, Doug
>
> On Mon, Mar 21, 2022 at 3:31 AM Eugene Shinn via Coral-List <
> coral-list at coral.aoml.noaa.gov> wrote:
>
> > Alina, I think you are right. When we had bleaching in the keys heads
> > stayed white for only a couple of weeks. They quickly get overgrown by
> > dark colored algae.I am sure you saw that too. Gene
> >
> > _______________________________________________
> > Coral-List mailing list
> > Coral-List at coral.aoml.noaa.gov
> > https://coral.aoml.noaa.gov/mailman/listinfo/coral-list
> >
> _______________________________________________
> Coral-List mailing list
> Coral-List at coral.aoml.noaa.gov
> https://coral.aoml.noaa.gov/mailman/listinfo/coral-list
>