The genomes of jellyfish are compared with those of other Cnidarian species that don’t have a free-swimming stage.

The 90-year-old marine biologist won a Nobel Prize in Chemistry for his isolation of green fluorescent protein.

From their smaller size and fewer tentacles, nettle jellyfish inhabiting the Chesapeake Bay are noticeably different from their ocean-dwelling counterparts, prompting scientists to classify the two as different species.