As per the image figure the corals live in calcium deposits and they have a hard exoskeleton. After the death of the organisms, the skin will remain the same.
What are corals?
The corals are marine invertebrate species that live in colonies and feed on lime they develop in coral polyps and represent a sac-like animal.
They have an exoskeleton that remains after they die. They, can soft, stay, and spongy corals. A coral skeleton is a mineral plus organic matter.
The coral species harden from the outside while they are alive from inside like the roots of plants. Shows signs of evolution and life.
Find out more information about the organisms.
brainly.com/question/17395741.
