Swim down under Hawaiian waters with PBS Digital Studios’ UnderH20 team to watch how lava from the rumbling Kilauea crater bursts into the Pacific Ocean, and then quickly cools to form what’s called pillow lava.
Showing 10 posts tagged swimming
Like an elusive, caped creature in the ocean, a female blanket octopus glides through the water. We know this video is of a female of the species because she is around two meters (6.6 feet) long. In contrast, the male blanket octopus is less than 3 centimeters wide. Yes, centimeters!
Differences in males and females of a species is called sexual dimorphism, and can include size, coloring or ornamentation, form or structure, and behavior. A few examples of this include peacocks, peacock spiders, birds of paradise, lions, elk, and even humans. The BBC is a good start for further viewing.
Karl Sims is a digital media artist, computer graphics research scientist, and software entrepreneur. His influential artificial life computer animations, like this one from 1994, were programmed as virtual creatures that simulated evolution through genetic algorithms:
This video shows results from a research project involving simulated Darwinian evolutions of virtual block creatures. A population of several hundred creatures is created within a supercomputer, and each creature is tested for their ability to perform a given task, such the ability to swim in a simulated water environment. Those that are most successful survive, and their virtual genes containing coded instructions for their growth, are copied, combined, and mutated to make offspring for a new population. The new creatures are again tested, and some may be improvements on their parents. As this cycle of variation and selection continues, creatures with more and more successful behaviors can emerge.
The creatures shown are results from many independent simulations in which they were selected for swimming, walking, jumping, following, and competing for control of a green cube.
‘Tis the season for scary creatures with toothy grins. From the team at MBARI, deep-sea fish with some serious teeth!
Listed in the order they appear: Aristostomias scintillans (Shiny loosejaw), Anoplogaster cornuta (Fangtooth), Tactostoma macropus (Longfin dragonfish), Chaenophryne, Chauliodus macouni (Viperfish), Tactostoma macropus (Longfin dragonfish), Chauliodus macouni (Viperfish), Tactostoma macropus (Longfin dragonfish).
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.