exposure time to UV-C does not seem to determine the amount of development deformities. All the experimental

exposure times to UV-C embryos stopped developing after the formation of the blastula but before gastrulation. This

suggests that the mycosporine amino acids do not help as much with protection against UV-C as they do with UV-B.

Figure 2. Sea Urchin embryos radiated with UV-C at second cleavage with a cytoplasmic blip

Figure 3. Control Sea Urchin embryos hatched from the fertilization envelope,ciliated, and undergoing gastrulation.

Figure 4. UV radiated Sea Urchin embryos delayed development and excess cells in the blastocoel.