Not all animals have a mouth, or even need one to eat! These different feeding strategies can teach us a lot about our ancestors and how they went from not needing a mouth at all to only eating with one.
Hosted by: Hank Green
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Sources:
Trichoplax adhaerens
https://doi.org/10.1093/icb/icm015
https://doi.org/10.1371/journal.pone.0136098
https://doi.org/10.1038/nature07191
https://doi.org/10.1016/j.cub.2014.05.046
Bryozoans
https://doi.org/10.1007/s12526-019-00948-w
https://animaldiversity.org/accounts/Bryozoa/
https://doi.org/10.1666/13-029
https://doi.org/10.1111/pala.12189
Hydra vulgaris
https://doi.org/10.1016/j.bpj.2016.01.008
https://doi.org/10.1002/bies.200800183
Paracatenula
https://doi.org/10.1371/journal.pone.0034709
https://doi.org/10.1073/pnas.1105347108
https://doi.org/10.1073/pnas.1818995116
Hagfish
https://doi.org/10.1098/rspb.2010.2784
https://doi.org/10.1038/srep00131
https://animaldiversity.org/accounts/Eptatretus_stoutii/
Images:
https://commons.wikimedia.org/wiki/File:Trichoplax_adhaerens_photograph.png
https://commons.wikimedia.org/wiki/File:Trichoplax.jpg
https://commons.wikimedia.org/wiki/File:Trichoplax_revised_anatomy.png
https://commons.wikimedia.org/wiki/File:Plumatella_repens_from_Haeckel_Bryozoa_drawing_Commons.jpg
https://commons.wikimedia.org/wiki/File:Freshwater_Bryozoan234.JPG
https://en.wikipedia.org/wiki/File:Polyps_of_Cnidaria_colony.jpg
https://oceanservice.noaa.gov/education/tutorial_corals/coral01_intro.html
https://www.inaturalist.org/observations/28006959
https://www.inaturalist.org/observations/33610065
https://www.eurekalert.org/multimedia/pub/110296.php?from=320887
https://www.eurekalert.org/pub_releases/2016-03/cp-itm030216.php
https://commons.wikimedia.org/wiki/File:FMIB_50097_Hydra_vulgaris.jpeg
https://www.eurekalert.org/multimedia/pub/197645.php?from=426129
https://en.wikipedia.org/wiki/File:Eptatretus_stoutii_1.jpg
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