Lakes And Rivers Of Antarctica

Annual Arctic sea ice minimum, 1979-2016

natgeo  Photograph by @thomaspeschak This is a marine iguana, but I think they should be called ‘Ocean Godzilla’ instead. These are our planet’s only lizards that feed in the ocean and despite their fierce, dragon like appearance they are very sensitive to climate change. They rely exclusively on cold water seaweeds for nourishment which die off quickly as the water becomes too warm. For more “Ocean Godzilla” pics follow @thomaspeschak

What’s a whale fall?

Whale falls can be found throughout the ocean. This one was spotted in Channel Islands National Marine Sanctuary, off the coast of Southern California!

GIF transcript beneath the cut.

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March is Dolphin Awareness Month, and here at Sanctuaries, we love our dolphins! 

Dr. Nancy Foster Scholar Alexandra Avila photographed these Hawaiian spinner dolphins in Hawaiian Islands Humpback Whale National Marine Sanctuary. Spinner dolphins are incredibly gregarious, sometimes gathering in groups of several hundred or more! These dolphins feed at night and return to coastal waters to rest and socialize. Because they rest during the day, it’s important to give them lots of space – would you like someone trying to hang out with you when you’re trying to get some shut-eye? 

(Photo: Alexandra Avila)

This would be so terrifying

Alone in the world is a little catshark 🦈

This is one of the three deep-sea catshark species found in the Northeast Pacific, the longnose catshark, Apristurus kampae. They are found at depths ranging from 180 to 1,888 meters (590 to 6,500).

Catsharks are bottom feeders and are most active at night, often sleeping in groups during the day and hunting at night.

This Type of Algae Absorbs More Light for Photosynthesis Than Other Plants

An obscure and ecologically successful group of algae, known as cryptophytes, have evolved pigments that capture light where chlorophyll cannot, Dudycha and colleagues report in a series of recent papers. The extra energy absorption from more wavelengths of light has allowed these algae to thrive in a variety of diverse environments, from oceans to streams to ponds to mud puddles.

Recently, NASA Goddard released a visualization of aerosols in the Atlantic region. The simulation uses real data from satellite imagery taken between August and October 2017 to seed a simulation of atmospheric physics. The color scales in the visualization show concentrations of three major aerosol particles: smoke (gray), sea salt (blue), and dust (brown). One of the interesting outcomes of the simulation is a visualization of the fall Atlantic hurricane season. The high winds from hurricanes help pick up sea salt from the ocean surface and throw it high in the atmosphere, making the hurricanes visible here. Fires in the western United States provide most of the smoke aerosols, whereas dust comes mostly from the Sahara. Tiny aerosol particles serve as a major nucleation source for water droplets, affecting both cloud formation and rainfall. With simulations like these, scientists hope to better understand how aerosols move in the atmosphere and how they affect our weather. (Image credit: NASA Goddard Research Center, source; submitted by Paul vdB)

Meet Bruce McCandless. He was a bit of a bad-ass. In 1984, Bruce was aboard the Challenger Space Shuttle and became the first human to walk in space without a safety line. By utilising a nitrogen propelled Manned Maneuvering Unit (MMU), he stepped free from Challenger into the blackness of space for a 90-minute space walk and wandered as far as 97 meters from the ship. The result is this amazing image which captures ingenuity, innovation and most certainly bravery.

Bruce McCandless died yesterday at the age of 80.

-Jean Image Credit: NASA