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.

Another underwater adventure in the archives: diving under a lake covered with Antarctic ice.

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.

This clip is from Oceans, a French documentary film by Jacques Perrin (released in the US by Disneynature). You can watch another clip from the movie here.

via Scientific American’s Octopus Chronicles.

With cupped hands, girls and women of the BaAka Forest People play the river like a drum, each taking on a different rhythmic pattern that complements the others.

These wasps are trying to cool their overheated nest. One brings a droplet of water to assist. Alan Teitel captures it at 4,700 frames per second. A moment of appreciation for nature and a moment of appreciation of technology at the same time: this is 0.8 seconds of real time stretched out into 2m15 seconds of slow motion.

Slow motion insects in the archives: ladybugs unfolding their wings here and here, Dance of the Honey Bee, and The Hidden Beauty of Pollination.

via Laughing Squid.

Hodgson Hawaii’s signature video style of a surfboard-mounted camera: Anthony Walsh Indo surf sessions.

Previously: a camera mounted on a hula hoop. 

h/t Doobybrain.