this is as the south end of the centre of the country continue to bake in a heatwave. it is a 37 celsius writer there now. and as we can see from those pictures. let s peer from can see from those pictures. let s peerfrom hugh can see from those pictures. let s peer from hugh schofield who is can see from those pictures. let s peerfrom hugh schofield who is in limoges. peer from hugh schofield who is in limoues. . ., ., . limoges. here in central france, limo . es limoges. here in central france, limoges by limoges. here in central france, limoges by the limoges. here in central france, limoges by the way, limoges. here in central france, limoges by the way, that - limoges. here in central france, limoges by the way, that is - limoges. here in central france, limoges by the way, that is the l limoges by the way, that is the famous clock tower behind me, here in central france it is punishingly hot. mid morning and we have temperatures in the mid 30 celsius going up to 38 later in
the ocean so hot, it s actually topped whun degrees. this is like a hot tub at this point. eric van damme joined scientists for a dive to see firsthand how this human-caused heat is damaging those critical reefs. reporter: we are leaving the marina on a scientific extradition with some of the world s top coral scientists to determine how the coral reefs off the florida peninsula are coping with unprecedented ocean heat. if anyone can tackle this problem, it s these people. they are inspired and motivated on the front lines of this climate emergency every day. one of the questions we have is what explains why some corals bleach severely and others don t. reporter: scientists aren t just worried about the high water temperatures. they are concerned this is only july and the hottest months are still ahead of us. corals are sensitive to heat. i am a little bit worried we might see quite a few bleached and stressed out coral. reporter: you see, more than 90% of excess feet from gr
coral reefs off the florida peninsula are tackling the heat. these people are inspired and motivated and on the front lines of this climate emergency every day. i think one of the big questions we have is why some corals bleach really easily and some don t. reporter: scientists are concerned this is only july and the hottest months are still ahead of us. i m a little bit worried we might see quite a few bleached and stressed out corals. more than 90% of the greenhouse heat is stored in the ocean. it can bleach our coral reefs. if the heat continues, they may die. this is part of why scientists worry. the first location we dove to was south of key biscayne. i think we saw exactly what we feared, which is that this is the moving front of severe
have as scientists what explains why some corals bleach severely and others don t. reporter: scientists aren t just worried they re concerned this is only july and the hottest months are still ahead of us. corals are really sensitive to heat, i m worried we might see quite a few bleached and stressed out corals. reporter: that doesn t just disappear. it can supercharge storms, melt our glaciers, and bleach our coral reefs, breaches corals are still alive but they re extremely stressed, highly vulnerable. if the heat continues they may die. so, this is part of why scientists worry. the first location we dove to was south of key biscayne. i think we saw what we feared, which is that this is the moving front of severe bleaching up through the keys and up into miami-dade. it was a remarkable moment to stand next to these century-old giants, how else do you describe it?
problem, it s these people. they re inspired and they re motivated and they re on the front lines of this climate emergency every day. i think one of the big questions we have as scientists is what explains why some corals bleach severely and others don t. reporter: scientists aren t just worried about the high water temperatures, they re concerned this is only july and the hottest months are ahead of us. corals are sensitive to heat. i m worried we ll see a few bleached and stressed out corals. reporter: more than 90% of excess heat from greenhouse warming is stored in our oceans. and that doesn t just disappear. it can supercharge storms, melt our glaciers, and bleach coral reefs. bleached corals are still alive, but they re extremely stressed, highly vulnerable, and if the heat continues, they may die. the first location we dove to was south of key biscayne. i think we saw exactly what we fear, which is that this is the moving front of severe bleaching up through the keys