More jellyfish

After Thursday’s look at the Moon Jellyfish, let’s see what another local species looks like. Instead of careful cultivation for pretty display samples, here are some less aesthetically-pleasing jellyfish straight from the ocean. The Black Sea Nettle (Chrysaora achlyos, wiki) was recognized and classified in 1997 (this is surprisingly recent). On our research cruises up the California coast, net tows for copepods resulted in nets full of these jellyfish, which only got in the way because they take up space in the nets that could otherwise be filled with copepods (wiki), and they also eat these zooplankton, resulting in fewer than should be in a normal sample (meaning undersampling).

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