Posts Tagged ‘Animals’

When shark embryos get hungry an unborn sibling makes a tasty treat

// November 25th, 2009 // 4 Comments » // Sex and Reproduction, The Realm of Bizzare

Next time you run out of food in the fridge ask yourself this, would you eat a human? If you were in a plane crash in the middle of a desert, would you eat the person who sat next to you, or would you brave the supply of frozen muffins and green omelettes they serve as sky “food”? For your own survival, would you kill and eat your brother or sister?

Some species of shark do indeed feast on their siblings, not just out in the deep blue sea, but while still inside the uterus. Now that’s taking sibling rivalry to a whole new level.

Sharks reproduce in three ways – they either species lay eggs and leave them to hatch, or they lay eggs and let them hatch in the uterus and then give birth to them, or they have a live births. Feeding a growing embryo while it develops in the womb is quite a challenge for sharks, but they have some crazy methods to do it.

Some species, such as the lemon shark, turn their yolk sac into a placenta by attaching it to the wall of the uterus. Salmon shark embryos eat a stream of unfertilized eggs while their in the womb, providing them with plenty of nummy nutrients. Nurse sharks and sand tiger sharks, at the tender age of not even born yet, swim about and eat their siblings. From the 20 or so pups that start life, only two remain – natural selection starting early *they grow up so fast*

This video from the documentary Animals in the Womb has incredible footage of sand tiger shark embryonic cannibalism.

Why do two pups survive, and not just one? Sharks have two wombs, at least, their uterus has two separate branches that keeps the two pups apart. Apparently having their own room helps curb their aggression, who’d have thought?

Bad Ass Images of Animals Dressed as Pirates

// November 16th, 2009 // Comments Off on Bad Ass Images of Animals Dressed as Pirates // Just for Fun

I’m having a FREAK OUT day today. So much to do! Time’s running out! BAH!!!

To distract myself from life, I give you these pictures of pirate animals. As far as I’m concerned, Sexy Man should be devoting all his time to making awesome pictures like these (a bit of time updating my site to be more sexy would be okay too.)

And so I present unto you – animals dressed as pirates.

Pirate Cat
I can has treasure?

Mouse Pirate
Check out that tattoo – so CUTE!

You can see them all here. Click through and chill out.

Science Tweets – Iceberg Art and a Vego Spider

// October 12th, 2009 // Comments Off on Science Tweets – Iceberg Art and a Vego Spider // The Realm of Bizzare

Today’s post is a big plate o’ retweet, because when I checked me Twitter today I found many tasty morsels I knew I had to skewer. Dine well, me hearties.

Iceberg Art

Iceberg Art, all-natural and un-freaking-believable. This image hasn’t been photoshopped, it looked that good in real life. Algae, sediments, and a speedy melt/refreeze process can make icebergs look like waves caught in time, striped lollies, and generally awesome! More eye candy can be had here, some of which blow my mind. I’m updating my wallpaper as I write!

On a distinctly less pretty note, we’ve got a gigantic huntsman staking out our office at the moment. Every time I walk past it I have to swivel my neck so I can watch it and make sure it doesn’t jump onto my head. I had a huntsman on my head once, someone batted it off with a magazine and it was massive. Not cool. I ain’t good with spiders. Squid and sharks, bring it on, but creepy eight legged freaks… arachnids should just stick to land. Unless I’m on land. In which case they should drown themselves. Except for this little guy.

Bagheera_kiplingi_vegetaria

Bagheera kiplingi is mostly vegetarian, between 60 – 90% of its diet is made up of Beltian bodies, nutritious little parcels of yum produced by Acacia trees to feed ants, which in turn act as bodyguards for the Acacia. It’s a jumping spider, and it hides from ant security with jumping, hanging by a silk thread, and chilling on old leaves the ants don’t often patrol. Ed Yong at Not Exactly Rocket Science has the full story here. Incidentally, wasn’t Bagheera the panther in Rudyard Kipling’s The Jungle Book? Hey, do you remember The Just So Stories? SO GOOD! Here’s an excerpt from The Elephant’s Child, about how the elephant got it’s trunk.

In the High and Far-Off Times the Elephant, O Best Beloved, had no trunk. He had only a blackish, bulgy nose, as big as a boot, that he could wriggle about from side to side; but he couldn’t pick up things with it. But there was one Elephant–a new Elephant–an Elephant’s Child–who was full of ‘satiable curiosity, and that means he asked ever so many questions. And he lived in Africa, and he filled all Africa with his ‘satiable curiosities.

Read the rest here, or browse through them all here. I recommend the Cat That Walked By Himself, it was always my favourite as a lass. For I am the cat that walks by herself, and all places are alike to me.






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