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Duncan Murrell - A Whale of a Time

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Duncan Murrell - A Whale of a Time

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  • Madagascar is home to about half the world’s chameleons, including both subfamilies, typical chameleons and dwarf chameleons (Brookesiinae). Chameleons are small to mid-size reptiles that are famous for their ability to dramatically change colours. Contrary to popular belief, they do not change colours to match their surroundings. Instead colour is usually used to convey emotions, defend territories, and communicate with mates. They have two layers of specialized cells that lie just beneath the lizard’s transparent outer skin. The cells in the upper layer, called chromatophores, contain yellow and red pigments. Below them is another layer of cells called guanophores, containing the colourless crystalline substance guanin, which reflect the blue part of incidental light. If the upper layer of chromatophores is yellow, the reflected light becomes green (blue plus yellow). A layer of dark melanin containing melanophores is situated under the blue and white light-reflecting guanophores. These melanophores influence the lightness of the reflected light. All these different pigment cells can relocate their pigment, thereby influencing the colour of the light that is reflected.<br />
Other notable features are bulging eyes that move independently, enabling them to be able to look ahead and behind at the same time, feet with paired toes fixed in a grasping position, and the existence of horns or crests on the heads of many species. Additionally, arboreal species have prehensile tails used for grasping objects when climbing, and some species have long extensile tongues for catching insects or small vertebrates at a distance often greater than their length.<br />
They are diurnal, solitary, and often aggressive towards members of their own species (marked by rapid colour change and aggressive posturing). They are opportunistic hunters that wait for their prey, and move in a curiously, tentative swaying manner. Their bodies are very narrow enabling them easier passage through foliage.
    Kayaking-Madagascar-reptiles36.jpg
  • Madagascar is home to about half the world’s chameleons, including both subfamilies, typical chameleons and dwarf chameleons (Brookesiinae). Chameleons are small to mid-size reptiles that are famous for their ability to dramatically change colours. Contrary to popular belief, they do not change colours to match their surroundings. Instead colour is usually used to convey emotions, defend territories, and communicate with mates. They have two layers of specialized cells that lie just beneath the lizard’s transparent outer skin. The cells in the upper layer, called chromatophores, contain yellow and red pigments. Below them is another layer of cells called guanophores, containing the colourless crystalline substance guanin, which reflect the blue part of incidental light. If the upper layer of chromatophores is yellow, the reflected light becomes green (blue plus yellow). A layer of dark melanin containing melanophores is situated under the blue and white light-reflecting guanophores. These melanophores influence the lightness of the reflected light. All these different pigment cells can relocate their pigment, thereby influencing the colour of the light that is reflected.<br />
Other notable features are bulging eyes that move independently, enabling them to be able to look ahead and behind at the same time, feet with paired toes fixed in a grasping position, and the existence of horns or crests on the heads of many species. Additionally, arboreal species have prehensile tails used for grasping objects when climbing, and some species have long extensile tongues for catching insects or small vertebrates at a distance often greater than their length.<br />
They are diurnal, solitary, and often aggressive towards members of their own species (marked by rapid colour change and aggressive posturing). They are opportunistic hunters that wait for their prey, and move in a curiously, tentative swaying manner. Their bodies are very narrow enabling them easier passage through foliage.
    Kayaking-Madagascar-reptiles39.jpg
  • Madagascar is home to about half the world’s chameleons, including both subfamilies, typical chameleons and dwarf chameleons (Brookesiinae). Chameleons are small to mid-size reptiles that are famous for their ability to dramatically change colours. Contrary to popular belief, they do not change colours to match their surroundings. Instead colour is usually used to convey emotions, defend territories, and communicate with mates. They have two layers of specialized cells that lie just beneath the lizard’s transparent outer skin. The cells in the upper layer, called chromatophores, contain yellow and red pigments. Below them is another layer of cells called guanophores, containing the colourless crystalline substance guanin, which reflect the blue part of incidental light. If the upper layer of chromatophores is yellow, the reflected light becomes green (blue plus yellow). A layer of dark melanin containing melanophores is situated under the blue and white light-reflecting guanophores. These melanophores influence the lightness of the reflected light. All these different pigment cells can relocate their pigment, thereby influencing the colour of the light that is reflected.<br />
Other notable features are bulging eyes that move independently, enabling them to be able to look ahead and behind at the same time, feet with paired toes fixed in a grasping position, and the existence of horns or crests on the heads of many species. Additionally, arboreal species have prehensile tails used for grasping objects when climbing, and some species have long extensile tongues for catching insects or small vertebrates at a distance often greater than their length.<br />
They are diurnal, solitary, and often aggressive towards members of their own species (marked by rapid colour change and aggressive posturing). They are opportunistic hunters that wait for their prey, and move in a curiously, tentative swaying manner. Their bodies are very narrow enabling them easier passage through foliage.
    Kayaking-Madagascar-reptiles37.jpg
  • Madagascar is home to about half the world’s chameleons, including both subfamilies, typical chameleons and dwarf chameleons (Brookesiinae). Chameleons are small to mid-size reptiles that are famous for their ability to dramatically change colours. Contrary to popular belief, they do not change colours to match their surroundings. Instead colour is usually used to convey emotions, defend territories, and communicate with mates. They have two layers of specialized cells that lie just beneath the lizard’s transparent outer skin. The cells in the upper layer, called chromatophores, contain yellow and red pigments. Below them is another layer of cells called guanophores, containing the colourless crystalline substance guanin, which reflect the blue part of incidental light. If the upper layer of chromatophores is yellow, the reflected light becomes green (blue plus yellow). A layer of dark melanin containing melanophores is situated under the blue and white light-reflecting guanophores. These melanophores influence the lightness of the reflected light. All these different pigment cells can relocate their pigment, thereby influencing the colour of the light that is reflected.<br />
Other notable features are bulging eyes that move independently, enabling them to be able to look ahead and behind at the same time, feet with paired toes fixed in a grasping position, and the existence of horns or crests on the heads of many species. Additionally, arboreal species have prehensile tails used for grasping objects when climbing, and some species have long extensile tongues for catching insects or small vertebrates at a distance often greater than their length.<br />
They are diurnal, solitary, and often aggressive towards members of their own species (marked by rapid colour change and aggressive posturing). They are opportunistic hunters that wait for their prey, and move in a curiously, tentative swaying manner. Their bodies are very narrow enabling them easier passage through foliage.
    Kayaking-Madagascar-reptiles38.jpg
  • DanumValley-15.tif
  • Kayaking-Madagascar-reptiles50.jpg
  • Kayaking-Madagascar-reptiles53.jpg
  • Kayaking-Madagascar-reptiles13.jpg
  • KinabatanganRiver-5.tif
  • Kayaking-Madagascar-reptiles42.tif
  • Kayak-Madagascar- mammal-birdMadagas...jpg
  • Kayaking-Madagascar-reptiles40.jpg
  • Kayaking-Madagascar-reptiles41.jpg
  • Mt.Kinabalo-frog-2.jpg
  • Kayaking-Madagascar-reptiles46.tif
  • Kayaking-Madagascar-reptiles10.jpg
  • The Palawan water monitor, Varanus palawanensis, is a monitor lizard endemic to the Philippines. It has enough differences to be considered a distinct species from the closely related water monitor, marbled water monitor, and Varanus rasmusseni. V. palawanensis belongs to the subgenus Soterosaurus with these other species.
    Palawan-underground-river22.tif
  • Western hemlock (Tsuga heterophylla) growing beside beaver pond, on the mainland just north of Petersburg, Southeast Alaska, USA.
    Alaska-vegetation31.jpg
  • Mt.Kinabalo-stream.jpg
  • KinabatanganRiver-7.tif
  • KinabatanganRiver-6.tif
  • Kayak-Madagascar-invertebrateInverte...tif
  • Myanmar-Burma-agriculture7.jpg
  • Palawan-assorted5.tif
  • Tongass National Forest, temperate rain forest, Chichagof Island, Southeast Alaska, USA.<br />
<br />
This is a definitive view of the Southeastern Alaska temperate rain forest; you can almost hear the ravens calling from high up on a massy branch. Southeast Alaska is a place that is defined by rain, lots of it, and at any time of the year. Sometimes it doesn’t stop raining for weeks and you can count the days of summer on one hand. If the sun breaks through the pervading clouds then the warmth releases misty serpents that weave their way across the branches and evaporate into the sunshine. It can be a dark and shadowed land but the mercurial interplay between light and water is always there, if you are prepared to wait…..
    vegetation-13.tif
  • Black and brown bears congregate at the salmon spawning streams during salmon to gorge themselves on the bounty of fish choking the rivers. They always squeeze out the eggs with their jaws to extract the protein-rich eggs. I found black bears to be much more of a problem than brown bears because they were much bolder, and certainly very persistent trying to get to my food. On one occasion I climbed a tree and hung some dry bags out along a branch over the river as far as I could reach, but a black bear managed to climb up the tree, and reach out far enough to use its powerful paw and sharp claws to rip the dry bag away from the heavy-duty nylon webbing sealing the bag. Black bears (Ursus americanus) are the most abundant and widely distributed of the three species of North American bears. An estimated 100,000 black bears inhabit Alaska. The black bear is the smallest of the North American bears. Adults stand about 29 inches at the shoulders and are about 60 inches from nose to tail. Males are larger than females, and weigh about 180-200 pounds in the spring. They are considerably lighter when they emerge from winter hibernation and may be about 20 percent heavier in the fall when they’re fat. Black bears can vary in color from jet black to white. Black is the color encountered most frequently across the state, but brown or cinnamon-colored black bears are sometimes seen in Southcentral Alaska and on the southeastern mainland. Cinnamon-colored black bears are also common in Alaska’s Interior. Some bluish-colored bears called glacier bears may be found in the Yakutat area and in other parts of Southeast Alaska. Black bears often have brown muzzles and some also have a patch of white hair on their chest.<br />
Black bears are most easily distinguished from brown bears by their straight facial profile and their claws, which rarely grow more than 1 ½ inches in length. Black bears have adequate sense of sight and hearing, but have an outstanding sense of smell.
    Alaska-wildlife-bearAlaska-wildlifeA...jpg
  • Up the next river I found a variety of stick insects and was able to watch a frog chirping at very close range. The frog chorus started in unison at about the same time very day, each species with its own distinctive call. I saw an incredible bird called a helmet vanga with the most ostentatious bright blue beak and paradise flycatchers trailing long ribbons of feathers behind them; this was the tropical paradise that I had been dreaming about. I was glad that my foot had healed sufficiently well enough to give me almost full mobility again. The next river that I paddled up was much larger than the others and there was a fishing village at the entrance and several dwellings along the lower reaches. I paddled as far as I could to find the greatest sense of solitude. I was well provisioned and I planned on camping there for a few days so that I could explore the surrounding forest. Just past my camp I found a beautiful tributary with a series of small waterfalls. When I hiked up the stream in the evening I entered frog heaven. I found six species, many of them very small and cryptic. The largest one was perched on a small branch and was not disturbed by my presence. I was able to photograph it from every conceivable angle.
    Kayaking-Madagascar-journey39.tif
  • I had been watching this brown bear for a few days and was determined to get a good photo of it, but after my experience of being charged by a bear in the same area I wanted to find a good place where I could remain safe and concealed so I found a tree with a good strong branch which extended over the small river that the bear often frequented at dusk. I had to wait a long time but eventually it walked right beneath me, and although it stopped momentarily when it heard the clicking of the camera shutter it never looked up.
    Alaska-wildlife-bearAlaska-wildlifeA...jpg
  • The McBride tidewater Glacier, Glacier Bay national Park and Preserve, Southeast Alaska, USA.<br />
<br />
The Glacier Bay Basin is a myriad combination of tidewater glaciers, snow-capped mountain ranges, ocean coastlines, deep fjords, and freshwater rivers and lakes that provide widely varying land and seascapes, and hosts a mosaic of plant communities, and a great variety of marine and terrestrial wildlife. It has many branches, inlets, lagoons, islands, and channels that hold prospects for scientific exploration and a visual treat for the visitor.<br />
Glacier Bay, the body of water, covers an area 1.375 square miles (3,560 km2) of glaciers and accounts for 27% of the park area. It was a large single glacier of solid ice until early 18th century. It started retreating and evolved over the centuries into the largest protected water area park in the world. It was formerly known as the Grand Pacific Glacier about 4,000 feet (1200 m) thick and about 20 miles (32 km) in width, which has since then, over the last more than 200 years retreated by 65 miles (105 kms) to the head of the bay at Tarr Inlet, and in this process left separate 20 other glaciers, including this one, in its trail.<br />
Glaciers are very dynamic entities and there are seven “active” tidewater glaciers in Glacier bay, which are advancing into the sea and thus calve off large chunks of ice that fall into the sea with a thunderous noise, raising large waves.
    ice-5.tif
  • Wet meadow with rusty menzesia and moss and lichen festooned dwarf trees, Port Houghton, Southeast Alaska, USA.<br />
<br />
I loved taking photos during the extended periods of Alaskan twilight when the colours deepened, and the lighter, pastel shades of green of the moss, lichens and the rusty menzesia shrub visible in this photo, seemed to be left hanging in the encroaching darkness like ethereal wraiths. The stunted trees appeared to be animated by their clothing of lichens and moss dripping from their trunks and branches. They were magical places that seemed to come alive as the light faded.
    vegetation-12.tif
  • The Glacier Bay Basin is a myriad combination of tidewater glaciers, snow-capped mountain ranges, ocean coastlines, deep fjords, and freshwater rivers and lakes that provide widely varying land and seascapes, and hosts a mosaic of plant communities, and a great variety of marine and terrestrial wildlife. It has many branches, inlets, lagoons, islands, and channels that hold prospects for scientific exploration and a visual treat for the visitor.<br />
Glacier Bay, the body of water, covers an area 1.375 square miles (3,560 km2) of glaciers and accounts for 27% of the park area. It was a large single glacier of solid ice until early 18th century. It started retreating and evolved over the centuries into the largest protected water area park in the world. It was formerly known as the Grand Pacific Glacier about 4,000 feet (1200 m) thick and about 20 miles (32 km) in width, which has since then, over the last more than 200 years retreated by 65 miles (105 kms) to the head of the bay at Tarr Inlet, and in this process left separate 20 other glaciers, including this one, in its trail.<br />
Glaciers are very dynamic entities and there are seven “active” tidewater glaciers in Glacier bay, which are advancing into the sea and thus calve off large chunks of ice that fall into the sea with a thunderous noise, raising large waves.
    Southeast-Alaska-glaciation1.jpg