Marine biologist Dr. Jack Costello spent most of his 30th year at PC studying ctenophores, also known as comb jellies, on a research trip to American Samoa and Bermuda. On this podcast, he discussed his research on gelatinous organisms such as jellyfish, research life at the Marine Biological Laboratory in Woods Hole, Mass., and the changes he and his family have made to limit their impact on the oceans.