Always ethereal, always eclectic, I write as the mood strikes, when there intrigue reveals itself. Usually that means something controversial or adventure of some sort.

I've tried really hard to be unprovocative, but have as yet been unsuccessful.

Thursday, 4 October 2007

An Aquarial Evening

Yes. Now that I have a video camera I will be posting more videos.

The aquarium was kind enough to host an evening gala party for all of it's volunteers, and I took the opportunity to get some quality video of some of my good friends.

Some of the images on my walk to the aquarium...

There are four kinds of Pinnipeds: walruses, seals, sea lions, and fur seals. The seal uses it's tail for propulsion and it's pectoral fins for steering, can't walk well on land, and has no external ears. The sea lions and fur seals use their pects for propulsion and their tail for steering, can walk on land, and have external ear flaps. Basically, the fur seals and sea lions are more adapted to an amphibious lifestyle rather than strictly marine.
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A look at 400 million year old sharks and white sturgeon.
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These guys are true seals, Harbor Seals.
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The Giant Pacific Octopus.
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Windows on Washington Waters- the main window, and the half-moon window.
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3 comments:

quaintance said...

Whats the difference between a sea lion and a fur seal?

What is the name of the south American otter/weasel you mentioned? A tyra? I had one of those stare me down on a quiet path in Costa Rica

@bdul muHib said...

I get confused on that. My Sea Mammals of the World says that "Sea lions are generally larger and more heavily bilt than fur seals. Their fur is single-layered, lacking the velvety underpile that gives fur-seal plets their commercial value...[fur seals] are distinguised by their more sharply pointed noses and dense velvety underfur, part-hidden in the living animal by course outer guared hairs. On the fore-flippers the thumb is shorter than the second digit...Sea lions have the first digit of te fore-flipper longer than the inner. Their fur is course, without a dense silky underfur. Where sea lions and fur seals share an environment (as they often do), sea lions usually select open beaches sheltered from heavy surf. They tend to breed slightly later than neighbouring fur seals, and feed closer inshore."

Basically we're dealing with small differences, other than size. Subfamily Arctocephalinae vs. Subfamily Otariinae.

What I know of the Giant Otter I learned from Wikipedia, and then had a discussion with others at the aquarium who were familiar with it. It's Pteronura brasiliensis. It doesn't seem to have any range in Central America.

mum said...

Wow, those were beautiful photos of the water. I am so glad you got the video camera. Your reviews are wonderful and erudite.