See Sea Slugs Scour Seagrass by the Seashore | Deep Look
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- เผยแพร่เมื่อ 28 ส.ค. 2024
- Eelgrass sea hares may look like lazy, zebra-striped spoonfuls of jello, but these sea slugs are actually environmental heroes. Their voracious appetite for algae helps keep underwater meadow ecosystems in balance-which is great news for sea otters.
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DEEP LOOK is an ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Explore big scientific mysteries by going incredibly small.
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Eelgrass sea hares are tiny aquatic slugs named for the bunny-like tentacles on top of their head. They can be found munching on the microscopic algae that grow on the surface of eelgrass, a type of marine seagrass. Also known as the Taylor’s sea hare, these humble, zebra-striped slices of green jello are actually crucial to the health of their ecosystem.
They don’t eat the grass itself; instead they help the meadows grow by clearing the way for sunlight to reach the plants, scraping the blades of grass clean with their rows of tiny teeth. The seagrass, in turn, serves as a safe haven to lay their eggs, and protection from predators like crabs and fish.
The blades of grass also protect more than just these voracious little cleaners. At Elkhorn Slough, a large winding estuary off of Monterey Bay, the eelgrass beds form a habitat for a diverse community of animals and plant life, which includes sea otters, Dungeness crabs, clams, skeleton shrimp and various fish.
For decades, nutrient overload from agricultural runoff has caused excessive algae blooms in Elkhorn Slough, as the thick algal mats block out the sunlight needed for the grass to grow. But with the reintroduction of sea otters to Elkhorn Slough in the 1980’s, ecologists observed a balancing effect on the system. The otters started eating the crabs that eat the sea hares. Because of this trophic cascade, the slug population grew, and their appetite for algae helped keep the eelgrass clean, counterbalancing the effects of the algal blooms.
--- Is a sea hare a nudibranch?
Nudibranchs and sea hares are both different types of sea slugs. There are various species of nudibranchs and sea hares. All sea slugs are a kind of mollusk.
--- What is a trophic cascade?
A trophic cascade occurs when the addition or removal of a top predator has a dramatic effect on the food web, drastically changing the structure of an ecosystem, and how nutrients cycle through it.
---+ Read the entire article on KQED Science:
www.kqed.org/s...
---+ For more information:
Paper on the ecological effects of sea otters, and their relationship to eelgrass and sea hares, by Brent Hughes, Sonoma State University -
www.pnas.org/c...
Katharyn Boyer’s Lab at San Francisco State’s Estuary and Ocean Science Center, focusing on eelgrass ecology and restoration work in the San Francisco Bay
online.sfsu.edu...
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#seahares #seaslug #seaslugs
I find sea hares and sea slugs so fascinating!
I see sea slugs as sea slug
Me using NASA's satellite to find who tf asked
Say the name of the title five times fast I double dare you
Same
I’ll come back when the replies aren’t dry
"Hey, its Laura"
Me: HIII LAURAAAA
So funny and original
Laura ☺️😚🤤
SIMPS
@@onlygamerstm5639 ah but L A U R A
Ok, but that baby sea hare did me in! 💗💗💗
We get it, Cristina!
Same! UwU
Lovely-looking sea slug. Love its colour and pattern.
Say the name of the title five times fast I double dare you
It's interesting because this one moves like a caterpillar!
1:49
"Dracula don't suck, Dracula scrape and lick!"
Hahahah, wasn't expecting this!
Glad Billy and Mandy isn't forgotten
@@Hyraladen huh? The hel- I mean heck is that
cute
As a budding biologist, I simply love these videos...😎😎
Glad you like them!
Pretty cool, that reminds of the yellowstone wolves and why top predators are so important for an ecosystem.
You're just trying to justify your bodacious flesh eating desires LOL
Awee the little baby babyy sea hare was simply adorable!
Gaah I love learning about sea creatures the most brr!
Timestamp
@@Alternative117 3:44
I know right! I was thinking, it is just me, or is this sea hare adorable?? 💚
😁 "Slug bunnies" 🤣
ok
I love the alliteration used as the title :)
Funny thing is, I just finished writing a paper on the conservation of sea grass and this video included points I included in my paper. An unusual coincidence!
Omg I’ve never been this early! I’ve been binging all your guys’ videos, they’re amazing! They’re the perfect little bite of education but are also entertaining! Keep up the amazing work!
Thanks, Jac!
Say the name of the title five times fast I double dare you
@@davidt8087 bet, I’ll post it too
Jac Buttafuoco you'll post what? Also did you try saying the title of this video 5 times fast in a row? It's a tongue twister for sure babe
@@davidt8087 why do female pfps spawn creeps
When you said the sea hares and sea grass had evolved together, I wondered at first if you'd meant in the sense of an arms race. But nope! It's a nice relationship!
The interrelationship of the plants and animals in that environment are so fascinating.
Yeah, at first I was also thinking that the sea hares fed on the sea grass, but nope! :) It's also a good reminder of just how fragile ecosystems can be, and why we as humans need to be vigilant and alert about monitoring how our activities can impact the natural world.
The good news is that this video also shows how quickly ecosystems can bounce back if just given a chance. Despite the massive algal bloom imbalance, it also means that there's crazy abundant food for the sea hares, so once their main pressure (the crabs) was taken off, their population explodes, and they quickly bring the algae back under control.
Once you start watching Deep Looks video, you cannot stop. ITS SO ADDICTIVE. This is actually really good and healthy if you watch their videos, this is because they teach you facts about many animals.
0:35 looking at those ears I prefer the name "Sea Shreks".
My heart wasn’t prepared for the cuteness of 0:45.
Laura’s voice makes me soo calm and at peace I could fall asleep instantly
if you like this, you should hear hank green in journey to the microcosmos
I'm not sayin' that 5 times fast!
Double dare u
Yes, you will. Mwahahaha.
Narrator: “Oh Hello~”
Me: “Hey, how’s it goin”
me: * after successfully reading the title fast and clean * I'mma start rapping now..
yes
Sea hares are so cute!
"See Sea Slugs Scour Seagrass by the Seashore!" Well, say that 10 times in a row. :P
Me who can't pronounce S properly: bites my tongue out🤧
Early science squad here
Yup✌👁👄👁
Here ✌
Here!
Present!
Doing stuff with the science team
Red pill, blue pill
Morpheus, Walruses
Seashells by the seashore-pheus
Hannibal?
He’s the final guest of the evening
Drinkin a forty in the death-basket
👁 👄 👁 Hannibal Buress?
Came for this
I find them adorable :)
Same!
I've watched all of your videos and this update make me so excited!!!!
Loved this video. The narrator could have said, just slide into our DM's, Delightful Mollusk, playlist 😅
I love it how it both feeds through its bottom and other fish hide in sea slugs bottoms. Fair play
There is something so satisfying about watching them side around. Their color scheme also pleases me.
I swear to the Holy Lord I love your contents! It's more educational and better than National Geography and Animal Planet. You have no idea how much I've been being your contents everyday!
Thank you for the kind words!
@@KQEDDeepLook No problem! I love your contents!
Ty❤️ my parents love your content keep the good work up 😌❤️✨
Thank you! Will do!
I am 13 years old and I love Biology and your videos make me love it even more !!! I have been getting good grades and with your videos I have a lot of info about various topics in Biology and teacher appreciates that alot . All credit to you guys 😁😁 I referred your channel to other Biology loving friends of mine and they enjoy it too . I had a question though .............wouldn't the Sea hares be vulnerable with those exposed gills ? Do they have parasites ?
Oh hey Laura and the Deep Look team :)
Any more live streams planned? That was fun!
There was one? I missed it :(
We will! Probably in January.
Here you go: th-cam.com/video/oo63rbdbIks/w-d-xo.html
Here you go: th-cam.com/video/oo63rbdbIks/w-d-xo.html
Yeah! It was a lot of fun! 💕
The narration is fantastic. You have great articulation and, as always, a captivating enthusiasm in your voice. Speech 100!
I never thought that I would have ever seen Shrek's slimy cousin in a Deep Look video
I did NOT expect the baby sea hare to be that cute
Their stripes remind me of Budgies!! Maybe Deep Look can make a video about adorable Budgie birds :)
Good idea!!
@@KQEDDeepLook yes please. They have to compete with logging so now nesting for these colourful birds has decreased dramatically in the wild. Its very interesting watching a pair hatch their young in a hollow tree trunk.
This was such a cool episode! One of the best examples i've seen of trophic cascade and how everything is connected in this ecossystem
Thanks Rita!
that's a cute water caterpillar
That baby sea hare is adorable!
Amazing video 😍 thanks Deep Look
Glad you liked it!
I absolutely LOVE Laura's voice. It's so soothing!
It’s a smol boi
Thx for keeping quarantine entertaining
We do our best!
always the best video ever love deeplook # 1 fan
Dang, those sea hares are such a lovely shade of green, and the black stripes just accent it so well.
I love nature 🤗🤗
Woah i remember this channel when it didn’t even had 10 videos. Look how it’s grown
Props to the musician(s) for this show! Always sounds fun and whimsical, like playing Pikmin! ❤
Thanks go to our composer, Seth Samuel. :-)
Sea slug finding food: OOH! GIMME GIMME! *proceeds to eat like crazy*
Land slugs: "Sea slugs can't possibly exist! Everyone knows that salt kills slugs and the sea is salty!"
THIS is what I love about the Internet -
I am able to see and learn about things on this planet that,
under absolutely no circumstances, would I otherwise ever get see or know about.
My still absorptive mind Thanks you ~
3:45 aww what a cute little baby slug
That baby slug at the end had no business being that cute
Smitten by the baby slug at the end, sigh, so cute.
I love all kinds of snails and slugs, land or sea! They are so cute 🧡
In fact, I have both pet landsnails and watersnails.
My niece would be so jealous to hear that you have pet snails! She loves them very much. When she finds one we let her keep it for a bit to observe, but then she has to put it back exactly where she found it. I wonder if Giant African land snails are legal where we live... I should find out. Although, my sister and brother-in-law would take ages to forgive me! Hahaha!
What type of snails do you keep?
whoever does the titles for this channel is having way too much fun
3:45
Omg. Baby sea slug. So cute 😍
0:36 These guys with their coloration, markings and general shape remind me of some kind of undersea Monarch caterpillars.
Love your video, DeepLook
Craig
Am I the only one who finds this satisfying?
This is a good example of food webs and ecosystems. Im going to share this video with my environmental science students
The sea hare is so cute!
2:21 Even Laura can’t help but fawn over an otter rubbing and smooshing his face UWU.
(Love the video btw! Thanks for constantly uploading and giving knowledge even with COVID19 around!)
Of course!! Thank you for the kind words, Amelia!
@@KQEDDeepLook omg you guys replieddddd this is the best day of my lifeeee ahhhh
I love the tongue twister in the title
"See sea slugs scour seagrass by the seashore"
Nice tongue twister.
❤
Science Squad for the win! Deep Look is awesome, man!
Trophic cascade is a reminder that all creatures play a part to keep the ecosystem in check.
I became very happy whn I come to know, how much scientists take care of our nature. They are special people of our God. 🙂
I really find their videos verry good
This is so cool! Awesome video, keep up the great work! Here from Eons BTW 😃
Good ol' KQED.
a cute and squishy slug that i didnt know it exsits
Hi! PBS Eons sent me here🖐 Great content by the way.
Thanks Lou!
Crabs: You can't defeat me.
Sea hares: I know. But he can.
Sea otter: *reeeeeee*
oh my god the baby sea hare....... i wanna hold it
Love your work 😘 these creatures are so fascinating.
Bring more such type of organisms.
More to come!
Hey Deep look, Eons sent me over here. I'd like to say hello, your videos are GREAT!
Breath-taking underwater filming.
They have the coolest patterns , thanks Deep look !!!
You are welcome, Moses.
Baby sea slugs are so cute.
Thanks to DEEP LOOK team, for this wonderful video.
Our pleasure!
Look at those pretties! The baby ones are even more adorable! I actually had a common slug scampering on me and trying use their radula on my skin. It was ticklish like having the tiniest rake caressing my fingertip.
Keep it movin sluggy
I think we should all take a minute to admire the titles of deep look videos
ahh!! that baby sea hare was so cute!!!
"oh, helloooo" - What We Do In the Shadows fans at Deep Look...????
Let's goo!
That baby seahare GOT me 🥺🥺
watching these types of videos cures my anxiety
Idk why, but these look so cute.
INCREDIBLE! Interesting.. I have never been so motivated to watch something this good!
Wow, thanks!
@@KQEDDeepLook This is incredible! Nature is amazing.
Even your video titles are awesome! 💞
They look so cute❤️!!
slugbunny sounds like the perfect name for em)
I really like your balance of information to bad pun ratio :)
What a well-told story about the web of life. Beautiful.
What a cute looking Pokemon
oh my gosh the way you lovingly film sea creatures
Great work @deeplook team, great to sea slugs baby, it looks kind of cute