sizvideos:

Video

 

solarpowereddragon:

mulishmusings:

notactuallycute:

shorter-url:

notactuallycute this concerns me for some reason, is this okay?

Hello, shorter-url​.
Your concern is very much understandable! Many people are taught that a shark cannot swim when still, which is partially true. 

Sharks mainly breathe via two methods– buccal pumping, in which the shark actively draws water in through its mouth to pass over its gills, and ram ventilation, in which the shark must constantly move to force water over their gills. Buccal pumping is more prevalent in ancient sharks, and while some sharks adapted for bottom-feeding still use it, many modern sharks – like the great white shark – have lost that ability altogether and instead can only breathe via ram ventilation. These are called obligate ram ventilators and they have to keep moving in order to breathe. 

This particular shark is an adult S. fasciatum, a Zebra or Leopard Shark, depending on the region. Fortunately, they aren’t obligate ram ventilators and, in fact, have very strong buccal muscles. You can even see them working in the first two gifs. When it starts moving to swim away, the diver lets it go, and there’s no harm for either party. 

All the best, 
Fatanyeros

Also, in my work with nurse sharks (same branch as S. fasciatum) I found them to actually enjoy scritches and petting. They would actively seek them out on their own terms.

My life is infinitely better for knowing some sharks like scritches.


Tags:

#shark #adorable

The ongoing saga of Harker and the stapler

kaijutegu:

kaijutegu:

My ball python, Harker, is really scared of this one stapler.

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Every time he sees it, he balls up.

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I was grading today and sure enough, the stapler was still scary.

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However, for the first time, I introduced a second stapler!

He was nervous at first… 

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But it didn’t take him long to warm up to it.

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Pretty soon it became his best friend!

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There was nothing the new stapler couldn’t do!

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Including protecting him from the other stapler.

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The moral of the story?

My snake is a weirdo.

Update: Today I took Harker to my office, where he met another stapler.

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He was fairly apathetic at first, but eventually they got on pretty well!

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This stapler was smaller than either of the others, but one thing was sure: this stapler was definitely not scary!

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Am I any closer to understanding my snake’s strange relationship with staplers?

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Absolutely not.


Tags:

#snake


{{next post in sequence}}

dendroica:

Blackish Nightjar (Nyctipolus nigrescens)

Blackish Nightjar is a relatively small dark nightjar, well named for its predominantly blackish plumage; this coloration provides good camouflage against this nightjar’s preferred microhabitat of granite rock outcroppings in forest clearings and along trails.

This preference means that the species is regularly encountered by ornithologists and birdwatchers, because the species is comparatively easier to find day roosting than many other nightjars in the Neotropics. Blackish Nightjar plumage also lacks any collared effect.

This species occurs from eastern Colombia across much of Amazonian Brazil, north to southern Venezuela and the Guianas, and south to Bolivia, and from sea level to approximately 1200 m.

Due to its undoubted abundance, the breeding biology of Blackish Nightjar is better known than many other Neotropical nightjars.

(Read more at Neotropical Birds)


Tags:

#bird #adorable

dungeongrind:

The Very Hungry Rust Monster is a mini-comic I made a few years back. I’ve seen it floating around Tumblr without attribution recently, so I’ve uploaded a higher-resolution version, properly credited.


Tags:

#…aww? #(I didn’t know where this was going) #(I’ve only encountered rust monsters in Nethack) #(and Nethack rust monsters look more like walruses than anything chitinous)