Category: science

Palau, In Western Pacific, Is First Nation To …

Palau, In Western Pacific, Is First Nation To Ban ‘Reef-Toxic’ Sunscreens:

Great news from Palau 🇵🇼

Sunscreens with chemicals toxic to reefs are banned nationally, with fines of $1000 for retailers who provide them.

Two chemicals at the top of the no-go list are oxybenzone and
octinoxate. Oxybenzone can be lethal to coral, damages DNA in adults,
and causes developmental deformaties in coral larvae.

Worried about sunburn? Plan ahead, stay out of the midday sun cover up,
search for reef-safe sunscreens – small efforts have a huge benefit for
our reefs. 

Impacts of Tourism: Philippines Special Part I…

Impacts of Tourism: Philippines Special Part II:

Thanks to Ocean Wavelengths for having me on the podcast to talk about my work with Green Fins and the small steps we can take that can have big positive impacts for coral reefs when we’re diving or snorkeling! Only 12 minutes and who knows, you might learn something new! 

wapiti3: The sea shore

wapiti3:

The sea shore

By Furneaux, William S.
Publication info
London,Longmans, Green and Co.,1922.
Holding Institution:
MBLWHOI Library
BIODIV LIBRARY

eartharchives: A bare-bones look at bizarre fi…

eartharchives:

A bare-bones look at bizarre fish

Modern fish make up a huge part of Earth’s ecosystems, and cover a lot of niches. Predators, omnivores and herbivores are all found in this diverse group. Millions of years of adaptation has sculpted their bodies into the various forms and shapes we see today.

Looking beneath the surface of a fish’s skin can reveal a lot about the ecology of fish – the most diverse group of vertebrates on Earth. Use our image sliders to see under their scales.

Written by @cyan-biologist, with original X-ray images from Fish Inside Out, by @smithsonian’s National Museum of Natural History, reconstructed by @franzanth.

Love me a bizarre fish or two!

The E/V Nautilus team are in Papahānaumokuākea…

The E/V Nautilus team are in Papahānaumokuākea Marine National Monument seeking out new discoveries in biology, geology, and archaeology. They came across this Gulper Eel (Eurypharynx pelecanoides) showing off for the camera! 

“Its pouch-like mouth can inflate in an instant, scooping up much larger prey just like a pelican–and giving it that muppet-like look! This gulper eel was likely a juvenile, as this species can grow up to three feet in length.”

First known omnivorous shark species identifie…

First known omnivorous shark species identified:

I don’t think we’ll ever know the true depth of the ocean’s mysteries!

Regular

the-real-numbers:

the-real-numbers:

So I was looking up a certain kind of cellular automata on Wikipedia out of curiosity, and then I ended up seeing a link for something called “billiard ball computers”.

So basically it’s a theoretical construction to show nature has results that can be reversible or something. You do have to let the billiards be frictionless, though. So it’s not like you could implement this in real lif-

Um…

This guy???

Wait,, just look at the pictures they have though. The captions refer to crab groups as “swarm balls”, which is a very endearing term IMO.

Unfortunately, these gates take up a lot of space, so to do big computations you’d need lots of crabs and several hundred feet of cardboard.

Me: You want to google something? Sure, let me fire up my crabputer…

Me: *dumps a bucket of soldier crabs into an acre-wide rat maze*

Me: it takes them a while to find the internet, so sit tight for a bit.

ohdeargodwhy: fuckyeahfluiddynamics: When I…

ohdeargodwhy:

fuckyeahfluiddynamics:

When I was a child, my father would take me trout fishing, and I spent hours marveling from the riverbank at the trouts’ ability to, seemingly effortlessly, hold their position in the fast-moving water. As it turns out, those trout really were swimming effortlessly, in a manner demonstrated above. The fish you see here swimming behind the obstacle is dead. There’s nothing powering it, except the energy its flexible body can extract from the flow around it. 

The obstacle sheds a wake of alternating vortices into the flow, and when the fish is properly positioned in that wake, the vortices themselves flex the fish’s body such that its head and its tail point in different directions. Under just the right conditions, there’s actually a resonance between the vortices and the fish’s body that generates enough thrust to overcome the fish’s drag. This means the fish can actually swim upstream without expending any energy of its own! The researchers came across this entirely by accident, and one of the questions that remains is how the trout is able to sense its surroundings well enough to intentionally take advantage of the effect. (Image and research credit: D. Beal et al.; via PhysicsBuzz; submitted by Kam-Yung Soh)

Oh my god what the fuck

Joe Rogan / Dr. Matthew Walker Sleep Podcast

Joe Rogan / Dr. Matthew Walker Sleep Podcast:

Dear everyone, 

This podcast is two hours and is *well* worth your time. We all know sleep is important, but this was mind-blowing. Sleep is good. Sleep is health. Sleep does not steal time, it gives you time. 

If you want to be an effective professional, or human really, get your eight hours. For serious. 

THERE’S A CRINOID THAT WALKS SIDEWAYS???

THERE’S A CRINOID THAT WALKS SIDEWAYS???