Sunday, May 4, 2014

Staring down shorebreak for the perfect shot


Getting tossed around by shorebreak and slammed into the sand day after day is a rough go; Clark Little wouldn’t have it any other way.
In fact, for the North Shore local, it’s all in a good day’s work.
But the Waimea addict didn’t grow up snapping shots with his father’s camera like so many photographers do.
He instead set out to capture his longtime stomping grounds when his wife came home with a framed photograph of Waimea shorebreak, an image he figured he would be able to easily replicate.
Having never owned a camera, he threw a cheap “waterproof” casing over a cheaper point-and-shoot and headed out to the beach.
Since that first attempt, Clark has not only emulated his wife’s purchased wall art, but — with a gallery in Haleiwa and international recognition — has become a heavily respected fixture of wave photography.

Links :

Saturday, May 3, 2014

Friday, May 2, 2014

Dolphins protect long-distance swimmer from shark


From ABC news

A long-distance swimmer seeking to become the first British man to complete the Ocean’s Seven, a group of seven long-distance swims around the world, was protected on his journey by a pod of dolphins who scared off a shark, according to the swimmer’s support team.

Adam Walker was swimming the approximately 16-mile long Cook Strait off the New Zealand coast last Tuesday when he spotted a shark in the water below him.
Just as his fears began to rise, Walker said he was surrounded by a pod of around 10 dolphins that swam with him for more than an hour.
“I’d like to think they were protecting me and guiding me home,” Walker wrote on his Facebook page.
“This swim will stay with me forever.”

Walker finished the Cook Strait swim in eight hours and 36 minutes.
He has already conquered the English Channel, Gibraltar Straits, Catalina Channel, Molokai Strait and Tsugaru Strait.

Ocean's Seven is a group of 7 long distance swims scattered across the globe: Irish Channel, the Cook Strait, the Molokai Channel, the English Channel, the Catalina Channel, the Tsugaru Strait and the Strait of Gibraltar.
It has only been completed by one person ever: on Saturday July 14th 2012, Mr Redmond from Ballydehob, Co. Cork, Ireland became the first person to complete the Ocean 7's Challenge when he successfully crossed the Tsugaru Strait in Japan.
Adam Walker will be the next...

With the Cook Strait now under his swim cap, Walker has only the North Channel in the Irish Sea left to swim to complete the Ocean’s Seven.
He will take that on this August, according to his YouTube page, and, if successful, complete the Ocean’s Seven.
In a fitting coincidence, given the animals he encountered in Cook Strait, Walker is swimming to raise money for the Whale and Dolphin Conservation, an organization that bills itself as “the leading global charity dedicated to the conservation and protection of whales and dolphins.”

Links :

Thursday, May 1, 2014

Slow life


Slow Life
from Daniel Stoupin


"Slow" marine animals show their secret life under high magnification.
Corals and sponges are very mobile creatures, but their motion is only detectable at different time scales compared to ours and requires time lapses to be seen.
These animals build coral reefs and play crucial roles in the biosphere, yet we know almost nothing about their daily lives.
Learn more about what you see in my post:

EDIT - answer to a common question: yes, colors are real, no digital enhancement, just white balance correction with curves.
When photographers use white light on corals, they simply miss the vast majority of colors.

To make this little clip I took 150000 shots.
Why so many?
Because macro photography involves shallow depth of field.
To extend it, I used focus stacking. Each frame of the video is actually a stack that consists of 3-12 shots where in-focus areas are merged.
Just the intro and last scene are regular real-time footage.
One frame required about 10 minutes of processing time (raw conversion + stacking).

Wednesday, April 30, 2014

Mystery of 'ocean quack sound' solved

The bizarre noise was first heard 50 years ago but now scientists say the Antarctic minke whale is its source

From BBC

The mystery of a bizarre quacking sound heard in the ocean has finally been solved, scientists report. 

The noise - nicknamed "the bio-duck" - appears in the winter and spring in the Southern Ocean. However, its source has baffled researchers for decades.

Now acoustic recorders have revealed that the sound is in fact the underwater chatter of the Antarctic minke whale.
The findings are published in the Royal Society journal Biology Letters.
Lead researcher Denise Risch, from the US National Oceanic and Atmospheric Administration (Noaa) Northeast Fisheries Science Center in Massachusetts, said: "It was hard to find the source of the signal.
"Over the years there have been several suggestions... but no-one was able to really show this species was producing the sound until now."

Lars Kindermann and Ilse Van Opzeeland of the Alfred Wegener Institute obtained this sound recording, which -- although it sounds like the quack of a mechanical waterfowl -- is actually a minke whale.
 The researchers attached acoustic monitoring tags to the whales to eavesdrop on them

If it quacks like a duck

The strange sound was first detected by submarines about 50 years ago.
Those who heard it were surprised by its quack-like qualities.
Since then, the repetitive, low frequency noise has been recorded many times in the waters around the Antarctic and western Australia.
Suggestions for its source have ranged from fish to ships.

The researchers now say they have "conclusive evidence" that the bio-duck is produced by the Antarctic minke whale.
In 2013, acoustic recorders were attached to two of the marine mammals and recorded the whales making the strange noise.
Dr Risch said: "It was either the animal carrying the tag or a close-by animal of the same species producing the sound."
The researchers do not yet know under what circumstances the minke whales make their distinctive vocalisations, although the sounds that were recorded were produced close to the surface and before the mammals made deep dives to feed.

The team says solving this long-standing mystery will help them to learn more about these little-studied animals.
Dr Risch said: "Identifying their sounds will allow us to use passive acoustic monitoring to study this species.
"That can give us the timing of their migration - the exact timing of when the animals appear in Antarctic waters and when they leave again - so we can learn about migratory patterns, about their relative abundance in different areas and their movement patterns between the areas."

The team will be analysing data from the PALAOA station, the Alfred Wegener Institute's (AWI) permanent acoustic recording station in Antarctica, which has been recording in the Southern Ocean continuously in the last few years.
This is not the only acoustic puzzle that scientists have recently shed light on
Another baffling low frequency noise - called The Bloop - turned out to be the sound of Antarctica's ice cracking.

Links :
  • NOAA : Scientists Identify Source of Mysterious Low-Frequency Sound Heard for Decades in the Southern Ocean