Lesson #8 - Deep-sea Cnidarians POWERPOINT
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
During a disturbance, sea pens pump water
out and retract into their bulbous base. They
emit bioluminescence, which is believed to
startle potential predators.
Image credit: Joe Mabel CC BY-SA 3.0