Showing 152 posts tagged water
From PBS Digital Studios’s UnderH2O team, go on a Blackwater Drift Dive:
The vast, unexplored ocean is filled with wonderful and mysterious creatures. This week, we journey far offshore for a midnight drift dive with over 1,000 feet of water between us and the seafloor. The animals here are bizarre and beautiful, and little is known about their biology.
Related viewing: The Deep Sea, The Secret Life of Plankton, The Plankton Chronicles: Sea Urchin, and Green Bomber Worms.
Birdbox Studio’s viral animated short, Wildebeest.
Watch YouTube user Xraise Cornell create a homemade horizontal vortex ring generator. When a small burst of air is released into a toroidal or poloidal vortex — essentially a spinning donut of water — it shapes the air into its own ring along the water’s trajectory, creating a vortex ring or a bubble ring.
While we have not made this invention (yet), it looks like a lot of fun. Or of course, with a lot of practice, you could try to make them with no materials at all, just like the dolphins do. Just remember to always be safe. Adult supervision is recommended when using tools or trying experiments underwater.
Or if you want to stay dry, try making a homemade vortex cannon with a tightly closed box with a narrow round hole at the end. Watch!
And here I thought this was just an animated gif, but no, via Daily Picks & Flicks, there’s a video of a diver making a bubble ring or vortex ring, above.
A vortex ring is the phenomenon where a quantity of fluid or gas in a toroid (donut) shape, travels through a medium of fluid or gas, while spinning like a thick circular bracelet that is being rolled off of a person’s arm. (Except the spin is in the opposite direction as when a bracelet is rolled off in this way.)
And evidently there are a series of videos from this diver. Here are two more:
Are these videos real? Yes, we’re pretty sure they are. So how exactly is this done? A small burst of air is released into a toroidal or poloidal vortex, essentially a spinning donut of water.
Bubble rings are actually made of two different rings, one inside the other, spinning in the same direction. The outer ring is made of water, and the inner one is made of air…
From YouTube User Maxwel Hohn, How to make a horizontal bubble ring:
Just remember to always be safe when underwater. Please conduct all experiments with adult supervision.
Related watching: make your own underwater vortex ring generator, make a homemade vortex cannon, or the viral video of cetaceans blowing bubble rings.
YouTuber westh2o was diving underwater with friends in Moorea, French Polynesia when they began to hear the whale song of a humpback whale. Westh2o writes:
The recording does not do justice to the actual sound. Seriously some of those sounds vibrated my chest. I didn’t realize whales had such a wide frequency of sound. Some were mid to hi frequency and some were very low.
As they swam into the depths, straining their eyes to find the sound’s source in the cloudiness of the water, the vocalizations became louder, and then something huge began to emerge. Here’s a glimpse:
Watch the video to get a reeeally good look. And then watch more whale encounters here, here, and here.
via PetaPixel.
