Can they even see above water? It would be just blurry view. They do it for fun, are they?
Spyhoppin'
Submitted 1 day ago by fossilesque@mander.xyz to science_memes@mander.xyz
https://mander.xyz/pictrs/image/7cf45c4d-5e4a-49c3-bf33-febd5bb276a3.jpeg
Comments
psx_crab@lemmy.zip 1 day ago
MrPoopyButthole@lemmy.world 1 day ago
If you can see under water then why wouldn’t they be able to see above water?
psx_crab@lemmy.zip 1 day ago
What i mean is they can’t see well while out of water, just like we can’t see well when we’re underwater. Our eye evolved to see above water, so when we try to see underwater, the water will mess up the light going into our eye, so everything would be blurry for us. The reverse is true for fish as well. So while they poke their head out as if they trying to take a peek, what they most likely see is blurry mess.
sga@lemmings.world 21 hours ago
If i am not wrong, and iirc, they have different lens systems as compared to humans (or other land dwelling beings). For us, light goes from air to a lens made of “watery” substance and then through a (different) “watery” fluid in our eyes, and then to the back. whenever you have refractive index changes (air and water have different indices(water is ~1.33)), light bends, and so, the way light would refract differently, or in other words, the angle at which “focuses” (not the current optical term here, but works in a colloquial sense, angle of cone of focus would be better) is different if you have air-watery*-watery system vs water-watery*-watery system. since fish live in water mostly, they develop for the lattery system (since most of the system is water esque, there is not much refractive difference which would bend light at larger angles), so they would have to use a more “powerful” (not correct again, better would be shorter focus) lenses, or else there eyes and eye sockets would have to be large. so if they come above water, these “powerful” lenses would resolve the focus spot before the back of eye (so they would be myopic). inverse happens with land dwelling beings going in water.
Amphibians (and some other “beings”) have some special “arrangements”. iirc, some frogs have an extra layer of “transparent eyelid” like thingy, that they close underwater, which gives the “additiional focussing power” required to resolve.
OldManBOMBIN@lemmy.world 23 hours ago
I can’t see under the water, because I’m in my bed
Corkyskog@sh.itjust.works 1 day ago
Because they have shark eyes.
Zerush@lemmy.ml 16 hours ago
One of the few dangerous shark for humans is the Bull Shark, they are very agressive and really attack everything, also humans. Even Spielberg regret the damage made by his Shark movie, relating the white shark as killer monster.
Tollana1234567@lemmy.today 5 hours ago
also the fact that bull shark can survive in freshwater as well.
Bytemeister@lemmy.world 16 hours ago
Plenty of people swim with bullsharks and hand feed them. Sharks are dangerous when you act like easy prey. Easy prey bleeds, it struggles, and it turns away from the predator to flee. That white shark didn’t bite Valerie Taylor because there was easier food, and she was aware of the shark.
Check the link for what happens when you act like prey around these animals. (Trigger warning : shark attack, of it wasn’t obvious)
Fondots@lemmy.world 1 day ago
I’ve known muskies to do something similar- swim around at the surface with their head out of the water.
I remember looking into it, and no it’s definitely a thing, but no one seems to know why exactly they do it. There’s a few theories that have to do with the oxygen concentration at the surface, regulating temperature, buoyancy, etc. but the one I personally like to subscribe to is the same as this, that they’re just looking around.
It makes me feel a little less bad about not being able to catch one if they’re at least more intelligent and curious than the average bass or bluegill or whatever else I’m pulling out of their lake.
yucandu@lemmy.world 1 day ago
Lookin fer’ birds to eat.
Source - Ima shark.
lars@lemmy.sdf.org 3 hours ago
Blåhaj is that you?
FuglyDuck@lemmy.world 1 day ago
Muskies are basically freshwater sharks.
So, gonna go with… probably looking for a duck to eat, or something.
Mechanite@lemmy.world 1 day ago
Orcas do it too
ShaggySnacks@lemmy.myserv.one 18 hours ago
Who knew sharks were nosy fuckers.
StalinIsMaiWaifu@lemmygrad.ml 1 day ago
Wrong, they do it so you can boop the snoot
Zerush@lemmy.ml 23 hours ago
Yes, really, great white sharks are not an agressive man eater, accidents ocurred by confusing a swimmer or diver with a seal, biting these to notice the error. But naturally with this bite you miss 5 kg of your body, the sorry from the shark then don’t help really.
ShaggySnacks@lemmy.myserv.one 18 hours ago
Mark [The sea captain]: Oh . . . I used to be the captain of my own cruise ship. It was the kind of boat folks rent for weddings, parties, you know, that kind of thing. But on the night in question it had been rented for a prom. Oh, the girls looked so lovely in their dresses, the boys such fine little gentlemen in their tuxedos. They were all drinking and dancing and spiking the punch. I was dizzy with delight when suddenly - my ship sank. We all went into the water. Then came Skoora, picking us off one by one by one by one. Till only I was left. And as he bore down on me, he paused as if to say, “What can I do? I’m a shark. I eat.” And then he cut me in half, cut me right in half - my wife measured me, I’m exactly half my former length. But as he swam away with my lower extremeties dangling from his jaw, I swear to god he was crying.
Kevin: Crying?
Mark: Yes, crying. Oh to be sure, he’s a brutal killing machine. But he shows more remorse than I’ve ever seen in a human.
MyFriendGodzilla@lemmy.world 1 day ago
He’s got an eye on where you are as well as where you could flee to (If you were normal prey). Casing the joint lol
Tronn4@lemmy.world 16 hours ago
Dun-uhn…
Lemmygradwontallowme@hexbear.net 1 day ago
So that’s what Bruce the shark was doing.
TropicalDingdong@lemmy.world 1 day ago
Image