(Cheryl of the Clue Crew reports from the Hall of Ocean Life at the American Museum of Natural History.)  One of the iconic exhibits in the Hall of Ocean Life is the coral reef diorama near a 30-times enlarged model of one of these creatures that make up reefs
They teem with life, with perhaps one 
quarter of all ocean species depending on ... Flower-like clusters of pink polyps 
make up this coral colony.