mucholderthen:

Ernst HaeckelHYDROZOA
Hydrozoans are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most living in saltwater. The colonies of the colonial species can be large, and in some cases the specialized individual animals cannot survive outside the colony. A few genera within this class live in freshwater.
Hydrozoans are related to jellyfish and corals and belong to the phylum Cnidaria. Some examples of hydrozoans are
the Freshwater Jelly (Craspedacusta sowerbyi), 
the freshwater polyps (Hydra), 
Obelia, 
the Portuguese Man o’ War (Physalia physalis),
 the chondrophores (Porpitidae), 
the pink-hearted hydroids (Tubularia).
(via Hydrozoa - Wikipedia)

mucholderthen:

Ernst Haeckel
HYDROZOA

Hydrozoans are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most living in saltwater. The colonies of the colonial species can be large, and in some cases the specialized individual animals cannot survive outside the colony. A few genera within this class live in freshwater.

Hydrozoans are related to jellyfish and corals and belong to the phylum Cnidaria. Some examples of hydrozoans are

  • the Freshwater Jelly (Craspedacusta sowerbyi),
  • the freshwater polyps (Hydra),
  • Obelia,
  • the Portuguese Man o’ War (Physalia physalis),
  • the chondrophores (Porpitidae),
  • the pink-hearted hydroids (Tubularia).

(via Hydrozoa - Wikipedia)

someone is jump-roping in the library

The 42 Best Lines from Douglas Adams’ HITCHHIKER’S GUIDE TO THE GALAXY Series

bookriot:

1. There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened.

2. Many were increasingly of the opinion that they’d all made a big mistake in coming down from the trees in the first place. And some said that even the trees had been a bad move, and that no one should ever have left the oceans.

3. ”My doctor says that I have a malformed public-duty gland and a natural deficiency in moral fibre,” Ford muttered to himself, “and that I am therefore excused from saving Universes.”

4. The ships hung in the sky in much the same way that bricks don’t.

5. ”You know,” said Arthur, “it’s at times like this, when I’m trapped in a Vogon airlock with a man from Betelgeuse, and about to die of asphyxiation in deep space that I really wish I’d listened to what my mother told me when I was young.”
“Why, what did she tell you?”
“I don’t know, I didn’t listen.”

6. ”Space,” it says, “is big. Really big. You just won’t believe how vastly, hugely, mindbogglingly big it is. I mean, you may think it’s a long way down the road to the chemist’s, but that’s just peanuts to space.”

7. “Funny,” he intoned funereally, “how just when you think life can’t possibly get any worse it suddenly does.”

8. Isn’t it enough to see that a garden is beautiful without having to believe that there are fairies at the bottom of it too?

9. A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.

10. Curiously enough, the only thing that went through the mind of the bowl of petunias as it fell was Oh no, not again. Many people have speculated that if we knew exactly why the bowl of petunias had thought that we would know a lot more about the nature of the Universe than we do now.

11. The reason why it was published in the form of a micro sub meson electronic component is that if it were printed in normal book form, an interstellar hitchhiker would require several inconveniently large buildings to carry it around in.

12. For instance, on the planet Earth, man had always assumed that he was more intelligent than dolphins because he had achieved so much — the wheel, New York, wars and so on — whilst all the dolphins had ever done was muck about in the water having a good time. But conversely, the dolphins had always believed that they were far more intelligent than man — for precisely the same reasons.

13. The last ever dolphin message was misinterpreted as a surprisingly sophisticated attempt to do a double-backwards-somersault through a hoop whilst whistling the ‘Star Spangled Banner’, but in fact the message was this: So long and thanks for all the fish.

14. The chances of finding out what’s really going on in the universe are so remote, the only thing to do is hang the sense of it and keep yourself occupied.

15. “Listen, three eyes,” he said, “don’t you try to outweird me, I get stranger things than you free with my breakfast cereal.”

16. “Forty-two,” said Deep Thought, with infinite majesty and calm.

17. Not unnaturally, many elevators imbued with intelligence and precognition became terribly frustrated with the mindless business of going up and down, up and down, experimented briefly with the notion of going sideways, as a sort of existential protest, demanded participation in the decision-making process and finally took to squatting in basements sulking.

18. The Total Perspective Vortex derives its picture of the whole Universe on the principle of extrapolated matter analyses.To explain — since every piece of matter in the Universe is in some way affected by every other piece of matter in the Universe, it is in theory possible to extrapolate the whole of creation — every sun, every planet, their orbits, their composition and their economic and social history from, say, one small piece of fairy cake. The man who invented the Total Perspective Vortex did so basically in order to annoy his wife.

19. “Shee, you guys are so unhip it’s a wonder your bums don’t fall off.”

20. It is known that there are an infinite number of worlds, simply because there is an infinite amount of space for them to be in. However, not every one of them is inhabited. Therefore, there must be a finite number of inhabited worlds. Any finite number divided by infinity is as near to nothing as makes no odds, so the average population of all the planets in the Universe can be said to be zero. From this it follows that the population of the whole Universe is also zero, and that any people you may meet from time to time are merely the products of a deranged imagination.

21. The disadvantages involved in pulling lots of black sticky slime from out of the ground where it had been safely hidden out of harm’s way, turning it into tar to cover the land with, smoke to fill the air with and pouring the rest into the sea, all seemed to outweigh the advantages of being able to get more quickly from one place to another.

22. Make it totally clear that this gun has a right end and a wrong end. Make it totally clear to anyone standing at the wrong end that things are going badly for them. If that means sticking all sort of spikes and prongs and blackened bits all over it then so be it. This is not a gun for hanging over the fireplace or sticking in the umbrella stand, it is a gun for going out and making people miserable with.

23. It is a well known fact that those people who most want to rule people are, ipso facto, those least suited to do it. To summarize the summary: anyone who is capable of getting themselves made President should on no account be allowed to do the job.

24. “Since we decided a few weeks ago to adopt the leaf as legal tender, we have, of course, all become immensely rich.”

25. In the end, it was the Sunday afternoons he couldn’t cope with, and that terrible listlessness that starts to set in about 2:55, when you know you’ve taken all the baths that you can usefully take that day, that however hard you stare at any given paragraph in the newspaper you will never actually read it, or use the revolutionary new pruning technique it describes, and that as you stare at the clock the hands will move relentlessly on to four o’clock, and you will enter the long dark teatime of the soul.

26. He gazed keenly into the distance and looked as if he would quite like the wind to blow his hair back dramatically at that point, but the wind was busy fooling around with some leaves a little way off.

27. “He was staring at the instruments with the air of one who is trying to convert Fahrenheit to centigrade in his head while his house is burning down.”

28. There is a moment in every dawn when light floats, there is the possibility of magic. Creation holds its breath.

29. “You may not instantly see why I bring the subject up, but that is because my mind works so phenomenally fast, and I am at a rough estimate thirty billion times more intelligent than you. Let me give you an example. Think of a number, any number.”
“Er, five,” said the mattress.
“Wrong,” said Marvin. “You see?”

30. There is an art, it says, or rather, a knack to flying. The knack lies in learning how to throw yourself at the ground and miss.

31. It is a mistake to think you can solve any major problems just with potatoes.

32. He hoped and prayed that there wasn’t an afterlife. Then he realized there was a contradiction involved here and merely hoped that there wasn’t an afterlife.

33. Eskimos had over two hundred different words for snow, without which their conversation would probably have got very monotonous. So they would distinguish between thin snow and thick snow, light snow and heavy snow, sludgy snow, brittle snow, snow that came in flurries, snow that came in drifts, snow that came in on the bottom of your neighbor’s boots all over your nice clean igloo floor, the snows of winter, the snows of spring, the snows you remember from your childhood that were so much better than any of your modern snow, fine snow, feathery snow, hill snow, valley snow, snow that falls in the morning, snow that falls at night, snow that falls all of a sudden just when you were going out fishing, and snow that despite all your efforts to train them, the huskies have pissed on.

34. The storm had now definitely abated, and what thunder there was now grumbled over more distant hills, like a man saying “And another thing…” twenty minutes after admitting he’s lost the argument.

35. He was wrong to think he could now forget that the big, hard, oily, dirty, rainbow-hung Earth on which he lived was a microscopic dot on a microscopic dot lost in the unimaginable infinity of the Universe.

36. “It seemed to me,” said Wonko the Sane, “that any civilization that had so far lost its head as to need to include a set of detailed instructions for use in a packet of toothpicks, was no longer a civilization in which I could live and stay sane.”

37. “Nothing travels faster than the speed of light with the possible exception of bad news, which obeys its own special laws.”

38. The last time anybody made a list of the top hundred character attributes of New Yorkers, common sense snuck in at number 79.

39. Protect me from knowing what I don’t need to know. Protect me from even knowing that there are things to know that I don’t know. Protect me from knowing that I decided not to know about the things that I decided not to know about. Amen.

40. All you really need to know for the moment is that the universe is a lot more complicated than you might think, even if you start from a position of thinking it’s pretty damn complicated in the first place.

41In the beginning the Universe was created. This has made a lot of people very angry and been widely regarded as a bad move.

42Don’t Panic.

ichthyologist:

Lateral Line

The lateral line is a system of sense organs found in many fish, and is visible as horizontal line running across its body. The line senses mechanical changes in the surrounding water, such as changing water pressures. In some species, electrical impulses can also be detected.

The lateral line plays an important role in schooling behaviour, predation and orientation. For example, a predatory fish may use it to sense water vortices created by fleeing prey. Conversely, the changing water pressures from approaching predator can warn a prey fish.

In an experiment, individuals of a group of Pollachius virens (pictured) were removed and subjected to different procedures, and their ability to rejoin the school observed. Those that were blinded were able to rejoin to reintegrate into the school, whereas those which had their lateral lines severed were unable to do so.

Thomas Haslwanter and Tino Strauss on Wikimedia Commons

astronomy-to-zoology:

Palau Nautilus (Nautilus bealuensis)

…is a species of nautilus found in the waters around the island of Palau in the Pacific. Like the more popular chambered nautilus (N.pompilius) the Palau nautilus has a closed umbilicus (space between coils of shell) which is covered with a callus. It differs in its modified radula and raised ridges on its shell, which make a cross-grid texture. The Palau nautilus is an opportunistic feeder and will eat arthropods, carrion and anything else it can stomach.

Phylogeny

Animalia-Mollusca-Cephalopoda-Nautilida-Nautilidae-Nautilus-belauensis

Image Source(s)

Kitten Meets Hedgehog [x]

jayparkinsonmd:


There’s currently a measles outbreak occurring in Williamsburg and Borough Park in Brooklyn. There have been 34 cases, 8 of which were in adults.
Here’a brief history of measles in America. This is what effective vaccines do: 

Measles is coming back because of a quack of a doctor in the UK who admitted to publishing blatantly false data for fame and notoriety. He falsely connected autism with the Measles, Mumps, and Rubella vaccine. He’s since admitted it and has been banned for life from practicing medicine in the UK. Rightly so. The body count is up to 1155. 
Measles is also coming back because of the anti-science movement (hipsters in Williamsburg?). The anti-vacciners are on par with the Christian Scientists believing that prayer will save your diabetes. If you are not vaccinating your children, you are simply rejecting science and one of the most remarkable inventions of humankind. On the same level as rejecting cars, planes, elevators, etc.. 
The issue of vaccinating your kids has very little to do with your kids, and everything to do with protecting the health of your community. Vaccinate your kids, and you’re doing your kid, your family, and your community a social favor. Don’t vaccinate your kids, and you are selfishly anti-social putting your kids, yourself, and your community at unnecessary risk of death.

jayparkinsonmd:

There’s currently a measles outbreak occurring in Williamsburg and Borough Park in Brooklyn. There have been 34 cases, 8 of which were in adults.

Here’a brief history of measles in America. This is what effective vaccines do: 

Measles is coming back because of a quack of a doctor in the UK who admitted to publishing blatantly false data for fame and notoriety. He falsely connected autism with the Measles, Mumps, and Rubella vaccine. He’s since admitted it and has been banned for life from practicing medicine in the UK. Rightly so. The body count is up to 1155. 

Measles is also coming back because of the anti-science movement (hipsters in Williamsburg?). The anti-vacciners are on par with the Christian Scientists believing that prayer will save your diabetes. If you are not vaccinating your children, you are simply rejecting science and one of the most remarkable inventions of humankind. On the same level as rejecting cars, planes, elevators, etc.. 

The issue of vaccinating your kids has very little to do with your kids, and everything to do with protecting the health of your community. Vaccinate your kids, and you’re doing your kid, your family, and your community a social favor. Don’t vaccinate your kids, and you are selfishly anti-social putting your kids, yourself, and your community at unnecessary risk of death.

jtotheizzoe:

Some fantastic mathematical illustrations, via wnycradiolab:

artandsciencejournal:

Kasia Jackowska

Kasia Jackowska’s Drawing Mathematics series whimsically illustrates various mathematical concepts as part of a project done for a brochure published by the University of Warsaw. Simple and sweet, these drawings add creativity to convention, using principles and formulas as her inspiration, and stylized animals as her muses. Can you recognize all the concepts?

See many more drawings and paintings by Jackowska at her website here.

- Erin Saunders

The artist has a Tumblr, too.

I can pick out Sierpinski triangles and the Pythagorean theorem. What else do you see?

smalltownbeatnik:

You totally just made that sound in your head.

smalltownbeatnik:

You totally just made that sound in your head.

and ABV is a monumental load of bullshit

It’s five o’clock somewhere. Well actually it’s five o’clock here. Given, that’s five o’clock in the morning but that counts goddamnit.

Some popular asshole reblogged that stupid textpost again. You’re bad and you should feel bad.

(Source: artssake)

(Source: chained-wings)