coral bleaching
What is the primary source of coral bleaaching?
Change in ocean temperature
What are two things vital for coral to photosynthesis
Zooxathellae and sunlight
Marine heatwaves cause ________ when corals expel their colourful algae and turn white.
Coral bleaching
what temperature does the deep sea coral thrive in?
-1°C
What expells from coral polyps when they are bleached?
Zoothanellae
How long does coral take to grown once damaged
10-40 years
This spikey, coral eating predator experiences population outbreaks due to agricultural runoff.
Crown of thorns
how old can deep sea coral live up to?
over 4000 years
Do corals only bleach when water gets to hot?
No, they bleach when water is less salty than usual, hot or cold.
Do corals reproduce sexually or asexually
both
Mostly used illegally in the coral triangle, this destructive fishing practice uses explosives to stun fish.
Blast fishing
up to how deep does deep sea coral live in the sea?
up to 6000meter deep
What temperature is too hot for coral?
18 degrees celcius
What are three things that trigger coral reproduction
Warm tempertures, After a full moon,sunset times and darkness
This chemical change happens when ocean absorbs excess carbon dioxide.
Ocean acidification.
what does deep sea coral rely on for food?
marine snow
When were the mass coral bleaching events? List at least 2.
1998, 2002, 2016, 2017, 2020, 2022, and 2024
What is the name of the free-floating, ciliated coral larvae that develop after the egg and sperm fuse
A planula
what does the ecosystems in the deep sea coral rely on for food? HINT- not photosynthsis
chemosynthsis