feelingautistic
feelingautistic
Hey you! You like sharks? Neat, I'm an autistic shark boy who loves telling people about them so come take a look.
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While most fish cannot regulate their body temperature (known as being ectothermic), basking sharks were recently discovered to be able to (known as being endothermic) which was previously thought to be exclusive to apex predators such as the basking shark's relatives: the mako and great white shark.
#marine animals#marine biology#shark#sharks#fish facts#shark facts#sharkblr#fish#fun facts#science#basking shark
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A group of sharks is called a shiver (although, as fish, they are often simply called a school).
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The name 'goblin shark' is a calque of its Japanese name 'tenguzame', a tengu being a mythical creature similar to the goblins of European folklore, usually depicted as having a red face and a long nose.
#marine animals#marine biology#shark#sharks#fish facts#shark facts#sharkblr#fish#fun facts#science#etymology#goblin shark
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(Hopefully you're all thinking 'that's not a shark!' but I thought I'd switch it up and talk about another fish I'm a fan of. I might even try and mix in some other fish trivia too here and there...)
Piranhas, much like sharks, have a pretty bad reputation. Most people likely picture an unsuspecting animal setting foot in 'piranha-infested' waters (although much like 'shark-infested' waters, that makes no sense because that water is just...where they live) and being descended upon by a swarm of piranhas ripping them apart until there's nothing left but bone. But let's break that down.
For starters, most piranhas aren't even carnivores but, in fact, omnivores, mixing in fruit, seeds and other plant matter into their diet (even the well-known red-bellied piranha pictured above is an omnivore). Additionally, Tometes camunani is a fully herbivorous piranha and mostly eats fallen fruit from trees.
Even on the carnivorous side of their diet, piranhas tend to be scavengers, feeding on dead animals which can serve a vital role in preventing the spread of disease through populations and overall keeping the water clean.
Additionally, you're not likely to be swarmed by them either. While some species of piranha live in groups, this is primarily for protection and piranhas tend to hunt solo. The group feeding frenzies commonly associated with piranhas are rare, usually caused by starvation.
It's important to remember that piranhas are just regular fish which happen to have sharp teeth. Most piranhas are actually quite skittish animals and certainly won't attack something many times its size like you or me and risk injury or death if we fight back or decide to make a meal out of them instead (especially if there are much easier snacks like insects or fruit around).
So rest easy knowing that you don't have to worry about being torn apart by a swarm of bloodthirsty fish the second you step in their territory and take the time to learn more about them if you're interested :)
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Most sharks are negatively buoyant, meaning they naturally sink in water. However, in 2015, two deep sea sharks - the bluntnose sixgill shark (top) and the prickly shark (bottom) - were discovered to be positively buoyant, meaning they naturally float in water.
This could have one of two purposes: aiding stealth hunting by enabling them to ambush prey from below by motionlessly rising towards them; or for migrating to warmer waters closer to the surface at night to warm up the muscles (to then actively swim back down to colder waters during the day).
#marine animals#marine biology#shark#sharks#shark facts#fish facts#sharkblr#fish#fun facts#science#deep sea#bluntnose sixgill shark#prickly shark#deep sea fish
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Frilled sharks are believed to be the origin of stories of sea monsters.
#marine animals#marine biology#shark#sharks#shark facts#fish facts#sharkblr#fish#fun facts#science#frilled shark
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what are a couple of your favorite endangered sharks? and perhaps, how can we help them? 🥺
Out of the endangered species, I would say hammerhead sharks are my favourites although it is a shame that such weird sharks have to be included in the endangered category.
In terms of helping them, it's important to understand that conservation is a complex topic and there are so many threats to sharks that each have their own challenges and solutions it would take too long to address all of them. But let's talk about overfishing as it's a well-known threat to endangered sharks.
It's important to remember that threats such as shark finning or overfishing and bycatch etc. are often more than just greedy fisheries raking in profit but low income workers making a living to support themselves and families, and that conservation is about finding solutions to threats that are sustainable for EVERYONE, including those you might consider at fault for the problems we're trying to prevent.
It may not be popular among the shark lovers out there, but improving rather than banning the fishing of sharks (e.g. making shark fishing more sustainable and preventing bycatch of sharks) is currently considered the better option for preventing overfishing of sharks among the scientific community (and is also not as difficult to implement as you may be led to believe, in fact it's already happening in some parts of the world).
Anyway, conservation can sound very doom and gloom sometimes so have a picture of a hammerhead shark :)
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Pilotfish
You may remember that I talked about remoras previously and I'm back to talk about another fish with a similar relationship with sharks you may not be so familiar with.
Similarly to remoras, pilotfish are often found swimming with sharks, particularly ocean whitetip sharks like the one in today's shark photo (the difference being while remoras physically attach themselves to sharks, pilotfish sort of just follow them around).
The main benefit pilotfish get from their relationship with sharks is protection from predators (remember, no predators want to mess with a shark) as well as free meals made up of the leftover scraps of their shark's meals.
Pilotfish and sharks likely share a mutualistic relationship as it has been proposed pilotfish also help the shark in return by eating ectoparasites on the shark's skin. It was also believed pilotfish led sharks to a food source (potentially where pilotfish get their name) but this is likely incorrect. Their relationship is considered a 'close companionship' by some, with young pilotfish even being observed swimming into a shark's mouth to graze on scraps of food without issue.
As well as sharks, pilotfish are known to follow ships and it was a common belief in ancient times that pilotfish would navigate ships to their desired destination (another potential origin of their name).
#marine animals#marine biology#shark#sharks#shark facts#fish facts#sharkblr#fish#fun facts#science#fishblr#marine life#fishes
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Exciting news for the cute shark lovers of the world! We finally have a recorded sighting of a baby great white shark, likely only a few hours old.
The question of where great white sharks give birth still remains a mystery to this day but this footage may suggest the coasts of California, where the footage was taken, are a site where these sharks give birth.
#marine animals#marine biology#shark#sharks#shark facts#fish facts#sharkblr#fish#fun facts#science#science news#great white shark
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Remoras
If you've ever observed sharks, you may have seen an image similar to today's shark photo: a shark tailed by some fish seemingly unbothered by the large predator they're following. These fish belong to a group of fish called the remoras or suckerfish.
Remoras got the name 'suckerfish' due to their ability to attach themselves to the side of an animal. To do this, they have a uniquely modified dorsal fin, flattened to form a series of disk lamellae which can create a vacuum to suction the fish to a host animal. Remoras attach themselves to many types of megafauna, including whales, dolphins and, of course, sharks.
The main benefit the remoras get from this adaptation is the ability to migrate large distances while attached with very little energy costs. In addition, the remoras get some protection from predators by shadowing large animals (what predator wants to risk messing with a shark, after all).
The nature of the relationship between remoras and megafauna is still debated. The most widely accepted opinion is that the relationship is commensal (the remoras benefit from the relationship while the host animal neither benefits nor is harmed by it), with observed sharks generally being unbothered by the remora's presence (as they tend to be by most things).
However, remoras have been observed grazing on harmful ectoparasites on the skin of whale sharks and ectoparasites have been discovered in the stomachs of remoras, suggesting the relationship may actually be symbiotic (both the remoras and the host animal benefits from the relationship).
On the other hand, the added weight from the attached remoras may create more drag on the host animal which may not affect large whales and sharks but smaller megafauna may face greater travelling costs from it. Additionally, dolphins have been observed spinning out of the water with remoras attached, theorised to be a method of the dolphins shaking the remoras off itself, suggesting the relationship may be parasitic (the remoras benefit from the relationship while the host animal is harmed by it).
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Had to follow because your posts are very cool! Can I ask if you could do a post or fun fact about great white sharks? It’s ok if not :D
Sure, how about I talk about a common misconception about great white sharks?
It is commonly believed that the great white shark is the modern day relative of the well-known (and very extinct) megalodon shark but, in fact, the megalodon and great white shark probably belong to two different families. It's actually more likely the great white shark evolved from the (also extinct) broad-toothed mako shark.
#marine animals#marine biology#shark#sharks#shark facts#fish facts#sharkblr#fish#fun facts#science#great white shark#phylogeny
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Basking sharks are named after the fact they often feed at the surface of the water where the water is warmer, as if they're basking in the sun (hence why they're also often called sun-fish).
#marine animals#marine biology#shark#sharks#shark facts#fish facts#sharkblr#fish#fun facts#science#basking shark
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The word 'shark' roughly means 'one who preys on others' , most likely derived from the word Schurke which means scoundrel or villain (often used to describe predatory people such as loan sharks).
#marine animals#marine biology#shark#sharks#shark facts#fish facts#sharkblr#fish#fun facts#etymology
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Frilled sharks are named after their first pair of gills which, unlike other sharks, stretch all the way across their throat, giving them the appearance of having a collar, lined at the edge with a red frill-like 'fringe'. The purpose of this feature is currently unknown.
#marine animals#marine biology#shark#sharks#shark facts#fish facts#sharkblr#fish#fun facts#science#frilled shark
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Early mariners wore gold amulets containing shark teeth, believing it would prevent them from drowning.
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Great hammerhead sharks have been observed swimming on their side to save energy while swimming.
#marine animals#marine biology#shark#sharks#shark facts#fish facts#sharkblr#fish#fun facts#science#great hammerhead#hammerhead
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Just saw your blog and thought it was neat and wanted to follow, only to see i was already following you. So uh
What's the best shark and why is it the thresher shark
The thresher shark is a pretty neat choice with its ability to tail whip fish to death (not to mention it has one of the derpiest faces of the sharks imo) and I hold a lot of favouritism towards sharks with weird but genius adaptations to their environments.
The clue for my pick for best shark is in my profile banner: the more shark savvy of you may recognise the epaulette shark, a shark with modified fins they can use to walk around on tide pools (but I will save their fun facts for another day).
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