True Facts: Incredible Crab Stories

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Published 2023-10-29
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Please help Dr Camprasse’s research by logging sightings or helping to classify images from Spider Crab Cams at the links here:
www.zooniverse.org/projects/spidercrabwatch/spider…
www.inaturalist.org/projects/spider-crab-watch

Thanks to:
Dr Elodie Camprasse, Deakin University
Dr Jason Spadaro, Mote Marine Laboratory & Aquarium
Dr Tanya Detto, Christmas Island National Park
Dr Rise Ohashi, Dept. of Biosphere-Geosphere Science, Okayama
Dr Mark E. Laidre, Dartmouth College
Dr Patricia Backwell, Australian National University

Chris Bray, youtube.com/@ChrisbrayNet1
Anna & Ned DeLoach, youtube.com/@blennywatcher
charlesleflamand, youtube.com/@charlesleflamand
Dr Adrian Smith, youtube.com/@AntLab
CINP
San Diego Zoo Wildlife Alliance
Mystic Aquarium, youtube.com/@MysticAquarium1
Anchorage Museum, youtube.com/@AnchorageMuseum
SCDNR, www.dnr.sc.gov/
NRDC.org
Jono Freedrix,    • Fiddler Crab: a day in the life  
Ninad Bhosale,    • Fiddler Crabs Fighting  
Kelvin Perrie
NOAA
Ark Media


Citations

De Grande FR, Fogo BR, Costa TM. Losers can win: Thermoregulatory advantages of regenerated claws of fiddler crab males for establishment in warmer microhabitats. J Therm Biol. 2021 Jul;99:102952. doi: 10.1016/j.jtherbio.2021.102952.

Harada K, Hayashi N, Kagaya K. Individual behavioral type captured by a Bayesian model comparison of cap making by sponge crabs. PeerJ. 2020 May 14;8:e9036. doi: 10.7717/peerj.9036.

Inoue, Tadanobu, Shin-ichiro Oka, Toru Hara, Three-dimensional microstructure of robust claw of coconut crab, one of the largest terrestrial crustaceans, Materials & Design, Volume 206, 2021, 109765, ISSN 0264-1275, doi.org/10.1016/j.matdes.2021.109765.

Inoue T, Oka S-i, Nakazato K, Hara T. Columnar Structure of Claw Denticles in the Coconut Crab, Birgus latro. Minerals. 2022; 12(2):274. doi.org/10.3390/min12020274

Krieger J, Drew MM, Hansson BS, Harzsch S. Notes on the Foraging Strategies of the Giant Robber Crab Birgus latro (Anomala) on Christmas Island: Evidence for Active Predation on Red Crabs Gecarcoidea natalis (Brachyura). Zool Stud. 2016 Apr 6;55:e6. doi: 10.6620/ZS.2016.55-06.

Laidre ME. Architectural modification of shells by terrestrial hermit crabs alters social dynamics in later generations. Ecology. 2019 Sep;100(9):e02767. doi: 10.1002/ecy.2767.

Laidre ME. Private parts for private property: evolution of penis size with more valuable, easily stolen shells. R Soc Open Sci. 2019 Jan 16;6(1):181760. doi: 10.1098/rsos.181760.

Laidre, M. & Hayssen, Virginia. (2012). Homes for hermits: Temporal, spatial and structural dynamics as transportable homes are incorporated into a population. Journal of Zoology. 288. 10.1111/j.1469-7998.2012.00921.x.

Lee, CC., Chiu, MC., Shih, CH. et al. The role of anthropogenic disturbance and invasion of yellow crazy ant in a recent decline of land crab population. Sci Rep 11, 12234 (2021). doi.org/10.1038/s41598-021-91732-z

Lemaitre R, Rahayu DL, Komai T. A revision of "blanket-hermit crabs" of the genus Paguropsis Henderson, 1888, with the description of a new genus and five new species (Crustacea, Anomura, Diogenidae). Zookeys. 2018 Apr 23;(752):17-97. doi: 10.3897/zookeys.752.23712.

Ohashi, Rise and Naoki Kamezaki. Peculiar Molting Behavior of Large Hermit Crabs. Pacific Science, 76(2):197-200 (2022). doi.org/10.2984/76.2.7

Schnytzer, Yisrael & Achituv, Yair & Fiedler, G. Curt & Karplus, Ilan. (2022). THE INTIMATE RELATIONSHIP BETWEEN BOXER CRABS AND SEA ANEMONES: WHAT IS KNOWN AND WHAT IS NOT. Oceanography and Marine Biology: An Annual Review, Vol. 60. 495-532. DOI: 10.1201/9781003288602-10

Yamaguchi, Takao & Honda, Hiroshi & Aratake, Hisamichi & Henmi, Yasuhisa. (2006). Decorating behavior of the majid crab Hyastenus diacanthus. Crustacean Research. 35. 79-91. 10.18353/crustacea.35.0_79

All Comments (21)
  • "But acid isn't the onl -- oh sorry. Butt acid isn't the only thing they have to look out for!" A great switch-up on the usual joke, and it actually works in this case!
  • @QuietFury9
    Man the feeling you get from clicking on a new video immediately as it comes up on your screen is so satisfying
  • @NecrochildK
    I used to keep a few fiddler crabs with a moon crab(pretty orange, black and purple land crab). One of the male fiddlers once tried to intimidate the moon crab, about five times it's size. He kept waving his claw, get closer, wave again, get closer. He finally got to the top of the tank where the moon crab was and was waving his claw right in his face. XD The moon crab just grabbed him by the claw and tossed him across the tank. The fiddler was fine except for his pride, which he recovered by going over to a female and doing a victory dance despite having lost.
  • @nico2electric374
    6:22 imagine if that hermit crab thing was something people did. Like you're about to get laid, you start undressing, and then some random dude steals your pants.
  • I remember the original True Facts videos. They were funny, a bit informative, but comparatively short. The True Facts videos we get now are delightful masterpieces of both comedy and informative facts, and I look forward to every video that gets released. Thank you so much for all of your hard work, and for your science hippies who help provide you with amazing videos and information
  • @charmh.422
    Wow, first time I've heard of sponge and decorator crabs, and that there are crabs that carry anemone pom poms. So much to learn from ZeFrank.
  • @jonofreedrix
    I contributed about 4 seconds of fiddler crab footage to this video at 13:38 and I feel honored 😂 This channel is amazeballs
  • @Innomen
    Knowing that coconut crabs are actually gigantic hermit crabs is a bit life changing for me. My little herbies were some amazing pets and I always wanted bigger and bigger ones. Now I know I can get gigantic ones. Side quest unlocked. Acquire coconut crab.
  • @DanGamingFan2846
    Crabs are pretty fascinating. There are so many different kinds with so many weird and amazing adaptations.The biggest arthropods on land and sea, claws half the size of their bodies, wearing other animals for camouflage or protection. No wonder everything keeps evolving into them.
  • @SentientMeatbag
    I love how this series slowly went from just making stuff up to actual facts with a list of citations.
  • @caroljo420
    A friend of mine in the navy was stationed on Christmas Island, and woke up covered and surrounded by millions of crabs! Kinda freaked him out!
  • @blahblah9036
    The perfect transitioning from land crab to coconut crab to hermit crab was excellent. Like, smooth to the point where I was waiting for him to go back to coconut crabs before I realized he had just moved on to hermit crabs.
  • @TSIRKLAND
    The ability of invertebrates to regenerate through molting is amazing! I got a tarantula for Christmas when I was nine years old. At the time I got her, she was missing one of her legs- no idea why or how. Over the course of three or four molts, it grew back completely! The first was actually the most impressive: as small and spindly and shriveled as it was, it had grown under a hard exoskeleton of nothing! With each next molt, it grew back a little bigger and stronger, until it was just as good as of the other legs. Super amazing! Especially for a curious nine / ten year old. I had that pet tarantula for eighteen years. Nature is fascinating!
  • @infinphoenix13
    @9:11 🤣🤣🤣😅😅😅. That octopus was like "there is no damn way I'm dealing with that nonsense, what in the hell did that crab hit me wit
  • @OceanSwimmer
    Coconut crabs terrify me --- still, I want to see one. At a safe distance! Thank you, Ze. Another genius production.
  • @danielleking262
    I was having kind of a lousy day, but I cannot tell you how much I laughed at 1:19 .... I backed it up to rewatch at least three more times. 😂😂
  • @exidy-yt
    I can never get tired of learning about biology when Ze Frfank is teaching. Never. ❤
  • @AlphaBookZ
    The return of Dr. Adrian Smith was extremely unexpected. Also the "but" "butt" switch joke is so good
  • @Candesce
    6:40 I cannot get over this muppet-from-hell crab.