"I felt a great disturbance in the Water… as if millions of voices suddenly cried out in terror, and were suddenly silenced. I fear something terrible has happened." -Obi-Wan Krillnobi
0:30 Correction: the amount of plankton to fish needed in calories or biomass would be equivalent, but the amount of prey eaten to repopulation of prey is what would differ. Extremely so. Edit: the manta ray style of filtering is the same as dyson styled vacuums, I wonder if the engineers knew about it.
@@pheart2381 Here's a link to a google images page of the model I've seen in the largest number of countries. (It's a pretty universal model, but not usually a school bus (or yellow) in other countries) www.google.com/search?q=school+bus&tbm=isch&chips=q:school+bus,g_1:international:iSQPm8yM5Yo%3D&client=firefox-b-1-d&hl=en&sa=X&ved=2ahUKEwjknfiI2IftAhXaADQIHUs4CQAQ4lYoBnoECAEQIQ&biw=1519&bih=727
@@brianjensen5661 wat if i told you that whales are mammals. cetaceans to be exact. en.m.wikipedia.org/wiki/Cetacea heres the wiki. so no. for someone supscribed to like 5 nature channels id expect you to know better.
The part about gray whales filtering mud blew my mind and then the fact that megamouth sharks exist also blew my mind because I have never heard of them before
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Not to poke holes but rays and sharks are pretty closely related, being ancient non bony fish from the same lineage (elasmobranchs). I wish there was a bony fish lineage chosen as well
Meanwhile, on land, we have the school bus, which can sometimes grow as long as one school bus. It feeds though a technique called "tube feeding", drawing extremely energy-dense nutrients from below the ground. Remarkably, while the school bus regularly ingests large prey - particularly mammalian young - it rarely digests them, instead regurgitating them, either individually or in a long, noisy stream.
What a few genetically small krill small enough to through the baleen or stronger krill better at holding on to Baleen and living off other stuff caught in the baleen
We sometimes have basking sharks in our local waters over the summer. Unfortunately I haven’t been lucky enough to see one, but I hope to get out one summer and have a sighting! Obviously not as impressive as a whale shark, but plenty big enough to view from the beach!
Sarlac more likely does its digestion more like earthworms. Just use the particles to aid digestion, thow in chemicals, extract nutrients and then excrete all the waste at the other end.
"It would have to eat a whole lot more fish." That's incorrect. Fish aren't less nutrient dense than krill. It's just that a given amount of primary energy cannot produce enough fish higher up the food chain given the 90% efficiency tax on every link in the chain. There simply wouldn't be enough food if it noshed at the top.
I'm fascinated by these animals, I'm trying to list all the giant filter feeder species that existed but it gets pretty blurry when you look at the extinct ones
Would animals like tube worms and jellyfish also be considered filter feeders? I feel like the later strays a bit into ambush hunter but its a blurry line
0:24 Is that 10% number net energy? Like the energy from chasing down a zebra foal gets washed out by having to share with the pride and also the energy expended to chase it down? That number is fascinating to me if true.
I'm just wondering why a whale that accidentally swallowed a tuna while also hunting sardines wouldn't benefit immensely. I get why the hunting strategies differ.
Anyone know how good baleen is at filtering out human trash like plastics and whether or not we see an increase in plastic or other human waste inside filter feeding whales?
