Nothing About Hippos Is Normal… Here's Why
Descrição
The hippo looks like the laziest giant in Africa. It is not. It cannot swim, yet it lives in rivers. Its skin makes its own red sunscreen. It gets all four feet off the ground at a trot. Its closest living relatives are whales. And 125,000 years ago, hippos wallowed in a warm river where Trafalgar Square stands today.
We take the hippo apart, piece by piece, from its skin to its voice, from its river all the way back through deep time, to answer one question: how can an animal this strange be one we think we know so well?
CHAPTERS
0:00 A giant we think we know
1:45 The river horse that cannot swim
3:35 Red sweat
4:55 Its reputation
6:23 Off the ground, and its voice
8:30 Cousins of whales
10:23 Hippos in Ice Age Europe
11:48 The engine of the river
12:53 Escobar's hippos
13:56 Nothing about it is normal
HOW TO READ THIS VIDEO
Real photographs and records are credited on screen. Animals and scenes of the deep past are reconstructions made with AI or stock animation, not records of the events. This video uses AI narration, AI-generated video, stock footage and museum records.
KEY SOURCES
Natural History Museum, London (Trafalgar Square hippo): https://www.nhm.ac.uk/discover/london-calling-specimens-from-the-big-city.html
Arnold et al. 2025, Current Biology (hippos in the Upper Rhine during the last ice age): https://www.uni-potsdam.de/en/pressreleases/detail/2025-10-09-hippos-lived-in-europe-in-the-last-ice-age
Saikawa et al. 2004, Nature (the red secretion): https://www.nature.com/news/2004/040524/full/news040524-7.html
Coughlin & Fish 2009, Journal of Mammalogy (walking under water): https://math.wcupa.edu/sciences-mathematics/biology/fFish/documents/2009JM%20Hippo.pdf
Hutchinson & Pringle 2024, PeerJ (hippo gaits): https://pmc.ncbi.nlm.nih.gov/articles/PMC11227274/
Nikaido et al. 1999, PNAS (whales and hippos share SINE insertions): https://pmc.ncbi.nlm.nih.gov/articles/PMC17876
Boisserie et al. 2005 (the fossil gap): https://newsarchive.berkeley.edu/news/media/releases/2005/01/24_hippos.shtml
Lihoreau et al. 2015, Nature Communications (Epirigenys, Lake Turkana): https://www.nature.com/articles/ncomms7264
Bradshaw et al. 2024, Proceedings of the Royal Society B (Cyprus dwarf hippos): https://news.flinders.edu.au/blog/2024/09/19/the-disappearance-of-dwarf-megafauna-on-palaeolithic-cyprus/
van Houdt & Traill 2022, Frontiers in Conservation Science (are hippos the deadliest?): https://www.frontiersin.org/journals/conservation-science/articles/10.3389/fcosc.2022.954722/full
Schoelynck et al. 2019 (hippos as silicon pumps in the Mara): https://www.gfz.de/en/press/news/details/hippos-the-animal-silicon-pumps
Dutton et al. 2018, Nature Communications (hippo waste and fish kills): https://pmc.ncbi.nlm.nih.gov/articles/PMC5956076
Colombia's hippos: https://www.scientificamerican.com/article/colombias-cocaine-hippo-population-is-even-bigger-than-scientists-thought/
IMAGE CREDITS (each record is credited on screen while shown)
Hippo canine from Trafalgar Square: © The Trustees of the Natural History Museum, London (CC BY 4.0)
Kirkdale Cave: William Conybeare, 1822 (public domain), Wikimedia Commons
Maps: Natural Earth (public domain). Stock video: Magnific, Pixabay. Animal sounds: Pixabay.
Signal Number 42: extraordinary true stories, mysterious places and the unknown.
We take the hippo apart, piece by piece, from its skin to its voice, from its river all the way back through deep time, to answer one question: how can an animal this strange be one we think we know so well?
CHAPTERS
0:00 A giant we think we know
1:45 The river horse that cannot swim
3:35 Red sweat
4:55 Its reputation
6:23 Off the ground, and its voice
8:30 Cousins of whales
10:23 Hippos in Ice Age Europe
11:48 The engine of the river
12:53 Escobar's hippos
13:56 Nothing about it is normal
HOW TO READ THIS VIDEO
Real photographs and records are credited on screen. Animals and scenes of the deep past are reconstructions made with AI or stock animation, not records of the events. This video uses AI narration, AI-generated video, stock footage and museum records.
KEY SOURCES
Natural History Museum, London (Trafalgar Square hippo): https://www.nhm.ac.uk/discover/london-calling-specimens-from-the-big-city.html
Arnold et al. 2025, Current Biology (hippos in the Upper Rhine during the last ice age): https://www.uni-potsdam.de/en/pressreleases/detail/2025-10-09-hippos-lived-in-europe-in-the-last-ice-age
Saikawa et al. 2004, Nature (the red secretion): https://www.nature.com/news/2004/040524/full/news040524-7.html
Coughlin & Fish 2009, Journal of Mammalogy (walking under water): https://math.wcupa.edu/sciences-mathematics/biology/fFish/documents/2009JM%20Hippo.pdf
Hutchinson & Pringle 2024, PeerJ (hippo gaits): https://pmc.ncbi.nlm.nih.gov/articles/PMC11227274/
Nikaido et al. 1999, PNAS (whales and hippos share SINE insertions): https://pmc.ncbi.nlm.nih.gov/articles/PMC17876
Boisserie et al. 2005 (the fossil gap): https://newsarchive.berkeley.edu/news/media/releases/2005/01/24_hippos.shtml
Lihoreau et al. 2015, Nature Communications (Epirigenys, Lake Turkana): https://www.nature.com/articles/ncomms7264
Bradshaw et al. 2024, Proceedings of the Royal Society B (Cyprus dwarf hippos): https://news.flinders.edu.au/blog/2024/09/19/the-disappearance-of-dwarf-megafauna-on-palaeolithic-cyprus/
van Houdt & Traill 2022, Frontiers in Conservation Science (are hippos the deadliest?): https://www.frontiersin.org/journals/conservation-science/articles/10.3389/fcosc.2022.954722/full
Schoelynck et al. 2019 (hippos as silicon pumps in the Mara): https://www.gfz.de/en/press/news/details/hippos-the-animal-silicon-pumps
Dutton et al. 2018, Nature Communications (hippo waste and fish kills): https://pmc.ncbi.nlm.nih.gov/articles/PMC5956076
Colombia's hippos: https://www.scientificamerican.com/article/colombias-cocaine-hippo-population-is-even-bigger-than-scientists-thought/
IMAGE CREDITS (each record is credited on screen while shown)
Hippo canine from Trafalgar Square: © The Trustees of the Natural History Museum, London (CC BY 4.0)
Kirkdale Cave: William Conybeare, 1822 (public domain), Wikimedia Commons
Maps: Natural Earth (public domain). Stock video: Magnific, Pixabay. Animal sounds: Pixabay.
Signal Number 42: extraordinary true stories, mysterious places and the unknown.
Palavra-chave: tete moçambique fotos
