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.
Showing 5 posts tagged scuba diving
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.)
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.
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:
Underwater footage shot whilst scuba diving in the Fiji islands and Tonga. Featuring colorful coral reefs, huge schools of tropical fish, sharks, humpback whales, underwater caves, scuba divers and much more marine life from the south Pacific.
Bonus: click the CC button for closed captions on this video from Bubble Vision, or enjoy the convenient list that they put together in the video description, (click Show More below the vid) for labeled names of the dive sites and marine life in each shot.
If you haven’t yet seen this “fishing under ice” video from Lake Saarijärvi in Vaala, Finland, watch it and see if you and your co-curators can catch exactly what’s going on before the end of the video! (More on how they did it here.)