#bonnethead shark

[feelingautistic]

Contrary to popular belief, not all sharks are carnivorous. The bonnethead shark (a member of the hammerhead sharks) was recently discovered to be omnivorous, including seagrass in their diet.

#fish facts #marine animals #marine biology #shark #shark facts #sharks #fish #sharkblr #fun facts #bonnethead shark

[cacklinggremlin]

Finished cardboard bonnethead shark

#artists on tumblr #my art #art #shark #bonnethead shark #sculpture #cardboard sculpture #cardboard art

[unofficial-sean]

Eyeauh

#shitpost #meme #bonnethead shark #carcharhiniformes #sphyrnidae #sphyrna tiburo

[sharks-are-friends-not-foes]

Found on Pinterest 😍😍 had to share!!

🎨: The Art of Ama @nekoama

#shark puppies #shark art #shark illustrations #tiger shark #whale shark #hammerhead shark #bonnethead shark #great white shark #lemon shark #bamboo shark #basking shark #nurse shark #thresher shark #blacktip shark #zebra shark #frilled shark #oceanic whitetip shark #greenland sharks #blue shark #shark blog #sharks #advocacy for sharks #respect the locals #shark post #pinterest #Pinterest art #Pinterest shark

[quark-nova]

Since y'all liked my previous shark post, here's the only plant-eating shark!

Bonnethead shark!

#shark #sharks #bonnethead shark #marine biology #creature

[bethanythebogwitch]

It's Wet Beast Wednesday and this week's topic is Sphyrna tiburo, the bonnethead shark. This is a small and wildly adorable species of hammerhead shark that has some very unique features not found in other sharks.

As with most sharks, females are larger than males, reaching an average of about 0.7 to 1 meter (2.3 - 3.3 feet) in length with the longest recorded specimen being 1.5 meters (5 feet). They live in shallow waters, preferring to live in seagrass beds and muddy or sandy sediment. They are found on both coasts of the Americas in warm seas, though they can be found as far north as New England or northern California in rare cases. They migrate south during the winter. Bonnetheads are social and usually live in groups of 5 - 15 members, but can occasionally school in the hundreds or thousands, usually during migration. Scientists have identified at least 18 social behaviors, often used to display dominance or compete for mates. Bonnetheads are very timid and flee from humans. Only one attack on a human has been recorded and it left minor injuries.

One of the unique features of the bonnethead is the fact that they are the only shark species to have sexual dimorphism of the head. Sexual dimorphism is when the males and females of a species have distinct physical features. This is common with sharks, with males usually being smaller than females and having distinct reproductive organs known as claspers. Bonnetheads have an additional dimorphic feature on the cephalofoil (that's the hammer head of the hammerhead sharks). Females have a smooth cephalofoil while males have a distinct bulge on the back edges. in addition, the cehalofoil of the bonnethead is smaller and more rounded than in other hammerheads. Other hammerheads don't use their pectoral fins very much and rely on using their cephalofoil to achieve pitch (up and down movement) and yaw (side to side movement). Because bonnetheads have smaller cephalofoils, they must rely on their pectoral fins more than other hammerheads, and theirs are therefore proportionately larger and stronger than the fins of other hammerheads. By hammerhead standards, the bonnethead is the guy with massive biceps.

The other major unique feature of bonnetheads is their diet. Bonnetheads eat mainly crustaceans, molluscs, and small fish, but also eat a large amount of seagrass. this makes them the only omnivorous sharks, with all others being strict carnivores. Scientists thought that the seagrass was used to protect their gut from shark shells, but recent studies have shown that they do actually digest around 50% of the seagrass and have enzymes in the hindgut that can break down cellulose, implying they do gain nutrition from seagrass.

Bonnetheads are one of several shark species capable of asexual reproduction. A female at the Henry Doorly Zoo in Nebraska produced a pup through through parthenogenesis. The pup's DNA was identical to the mother's. Bonnetheads also have the shortest gestation period of any shark at only 5-6 months and give live birth.

Bonnetheads were once classified as "Least Concern" by the IUCN. this led to it being highly targeted in fisheries, both commercial and recreational. In 2020, it was reclassified as "Endangered" due to massive population declines in the Caribbean, Central and South Atlantic, and most of their Pacific range, largely due to overfishing. As of late 2021, the IUCN now considered them the be "Largely Depleted, meaning their population is currently much smaller than it was historically.

#wet beast wednesday #fishblr #fish #shark #sharks #bonnethead shark #hammerhead #ecology #zoology #marine biology #very cute shark

[typhlonectes]

Meet the Bonnethead, the First Known Omnivorous Shark

LATE-DAY SUMMER SUN streams through crystalline waters as a bonnethead shark glides past a seagrass meadow in the Florida Keys. One of nine species of hammerhead sharks, bonnetheads abound in shallow waters, where they feed on crab, shrimp, snails, bony fish and—remarkably—seagrass...

Read more:

Meet the Bonnethead, the First Known Omnivorous Shark (nwf.org)

#shark #elasmobranch #fish #bonnethead shark #animals #nature #marine biology #science #ocean #ichthyology #florida #north america

[cypherdecypher]

Animal of the Day!

Bonnethead Shark (Sphyrna tiburo)

(Photo by Robin Riggs)

Conservation Status- Endangered

Habitat- Western Atlantic Ocean; Gulf of Mexico; Caribbean Sea

Size (Weight/Length)- 120 cm

Diet- Crabs; Small fish; Shrimp; Seagrasses

Cool Facts- Despite looking like a tiny hammerhead, the bonnethead shark is the only omnivorous shark. While they eat crustaceans and small fish, the bonnethead won’t turn their snout up when seagrass is on the menu. Up to 60% of the shark’s diet is made up of vegetation due to a unique enzyme in their gut that breaks down cellulose. In addition, bonnethead sharks have the shortest pregnancy of any shark. Females are only pregnant for 5 months before giving birth to up to 12 pups. In captivity, female bonnethead sharks are able to asexually produce miniature clones of themselves. Bonnethead shark populations are dropping due to commercial and sport fishing.

Rating- 11/10 (Named after a hat.)

#Animal of the day #Animals #Sharks #Marine animals #Friday #May 26 #Bonnethead shark #biology #science #conservation #the more you know

[fishainsley]

Drew some sharks today!

#art #artists on tumblr #my art #autistic artist #sharks #traditional art #notebook paper #pencil art #sketches #shark #whale shark #goblin shark #porbeagle shark #basking shark #bonnethead shark #cute sharks #cute animals #animal art #shark art

[clown-around-and-find-out]

apparently every girl is either lantern shark pretty, nurse shark pretty, mako shark pretty, or bonnethead shark pretty

(post that my edited version is making fun of is below the cut)

#🦈: my posts #🦈: silly #🦈: spinterest #🦈: sharks #sharks #shark #sharkposting #shark posting #lantern shark #nurse shark #mako shark #bonnethead shark #shark post #shark posts

[turboemmy]

ive also added a new pin and sticker design in my shop as well! :-)

#sharks #greenland shark #bonnethead shark #wooden pins #stickers #merch #my art

[hexeratii]

Aquarium visits and the doodles that come with!

I thought it was appropriate that I try to incorporate watercolours into the sketches seeing as I did the ink work at an aquarium but this was virtually my first time using the medium and I can safely say I freaking hate it. Idk how y'all watercolourists do it, teach me your ways!!

#art #drawing #doodle #artwork #sketch #illustration #traditional art #sketchbook doodles #sketchbook #observational drawing #aquarium #jellyfish #shark #sharks #goliath grouper #bonnethead shark #blubber jellyfish #daily sketching #sketching #observational sketching #life drawing #animal drawing #ink drawing #pen sketches #watercolour doodles

[cacklinggremlin]

Cardboard shark progress

#artists on tumblr #artwork #art #sculpture #cardboard sculpture #shark #bonnethead shark

[unofficial-sean]

bonnethead be upon ye

#bonnethead shark #sharks #fish #chondrichthyes #elasmobranch #euselachi #carcharhiniformes #sphyrna tiburo #meme #shitpost

[sharks-are-friends-not-foes]

🦈 Daily Shark Fact: 🦈

Bonnethead Sharks, also known as the Shovelhead shark, is a species of tropical shark, and is the smallest member of the hammerhead genus. Bonnetheads are the only shark species known to be omnivorous. They consume both animal and plant matters. Their diet is usually dominated by marine crustaceans, mostly blue crabs. They also eat mollusks, shrimp, and different species of small fishes. Seagrasses have also been found in their stomachs.

#bonnethead shark #hammerhead #small shark #tiny shark #advocacy for sharks #respect the locals #save the sharks #shark #shark awareness #shark blog #cartilaginous fish #elasmobranch #shark lover #sharks #just a girl who loves sharks #fyp #sharks of tumblr #shark tumblr #shark post #sharks dont infest oceans #shark facts #daily shark facts #facts about sharks

[nicetoseayou]

bonnethead sharks have to be constantly moving or they will sink. hammerheads are some of the most “negatively buoyant of marine vertebrae”.

bonnethead sharks have larger pectoral fins then other hammerheads and are the only hammerhead to actively use their pectoral fins for swimming.

they are harmless to humans unless provoked.

their conservation status is endangered and their population is decreasing. their caught and killed as a bycatch or for their fins for shark fin soup.

that’s it for this week’s shark spotlight! if you have any questions, feel free to ask. send me an ask or reply to a spotlight post if you want to request a shark! i’ll happily take any requests. next week’s shark will be announced tomorrow!

#this was supposed to be posted yesterday but i got distracted #mikey’s sharks #shark spotlight #shark facts #sharks #marine biology #marine life #ocean #bonnethead shark #shark