This baby nautilus emerged this week from an egg laid last November at San Diego's Birch Aquarium. For this tiny cephalopod, the process of being born took not hours, or even days, but weeks. The ZooBorns site has a series of photos that show how the nautilus slooooooowly emerged from the egg.
Biologists don't know exactly why this process takes the nautilus so long.
For one thing, they're difficult to breed in captivity. (It's not panda hard, but not simple, either. This was the first egg to actually hatch at the Birch Aquarium, out of 40 laid over the last 3-4 years.) The first captive nautilus hatchlings weren't recorded until 1990. We've still got a lot to learn about them.
One thing we do know, though, is that baby nautiluses don't seem to come with any special apparatus for breaking themselves out of the egg. In contrast, most birds and reptiles (as well as some frogs, spiders, and egg-laying mammals) have what's called an "egg tooth" — sort of nature's bottle opener for egg-bound embryos. Lacking that, nautilus hatchlings are basically forced to wiggle their way out of the egg along the line where a seam of capsule splits.
That's exhausting work, especially for a creature only 3cm long.
Gravitational waves are real, and scientists have detected them. In the video above, PBS Space Time explains the discovery by researchers at the Laser Interferometer Gravitational-Wave Observatory (LIGO). From the New York Times: A team of physicists who can now count themselves as astronomers announced on Thursday that they had heard and recorded the sound […]
Evil Mad Scientist Labs have released their latest set of nerdy Valentines ready for you to print, glue on cardstock, and use to win your true love’s heart.
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Light used to just be one of two things: on or off. Simple as that. Either a flood of yellow or total darkness. Then the dimmer switch happened and you could adjust the brightness to meet your seductive needs and suddenly everyone looked a little better in the gentler light. And now your luminary universe […]
Projects will always need management. And now with the tech gold rush it feels like there are more projects than ever with fewer managers than there’s demand for. But it takes too much time and money to go back to school full time so luckily the Project Management Professional certification training course is now 96% […]
If you’ve been blessed enough to avoid them yourself, you’ve definitely heard the horror stories. Late night, crushing out a ton of work, writing, coding, anything, then boom – your computer crashes. The battery blows, you spill water or coffee all over the place, or it just shuts down with no explanation, and you’re screwed. […]