Shinagawa Aquarium Tokyo

Doctor fish tank - Big hit with visitors by Martin

I remember that a few years ago a small fish called Doctor fish (Garra rufa) hit the news and many blogs. The fish eat dead skin cells of spa visitors leaving the healthy skin to grow. An article from China Radio International has more on this.

Now the fish has made it into public aquariums, or at least one aquarium, where visitors can submerge their hands into the water and see and feel (!) the fish nibbling on their hands.

Here is a short video clip:

Touch tanks are usually popular with kids, but adults are often reluctant to the get their hands messy, or even think it unhygienic and unhealthy. But apparently not so with this Doctor fish tank. Maybe because of its name or its uses in spas and for skin treatments, but I saw just as many adults - if not more - as kids trying to get their skin "cleaned".

Below: Happy adults getting their hands wet and cleaned

Here at the Shinagawa aquarium, Tokyo, they had two smaller cylinders tanks. A step in the front of the display allowed children to reach in.
I was very excited about this exhibit and couldn't wait to tell clients and the world at large about it. Since some, if not most touch tanks, are controversial, I thought this would be the perfect win-win situation: Visitors of all ages love to interact with these fish and the fish, I assume, love to eat.
But then I came across the following Wikipedia article:
Garra rufa can be kept in an aquarium at home; while not strictly a "beginner's fish", it is quite hardy. For treatment of skin diseases, aquarium specimens are not well suited as the skin-feeding behavior fully manifests only under conditions where the food supply is somewhat scarce and unpredictable.
End of quote

Does that mean the fish only nibbles on skin when it is starving? And, is it true? If so, it wouldn't be ethical to display them unless they are also fed otherwise.

No instructions - say it with a photo

I don't like reading instructions - anywhere, anytime. Saying it with a photo is so much faster and easier to absorb. I have now seen it used a couple times in science museums, which have some of the worst offenders when it comes to having to read long winding instructions before you know what you need to do.
The doctor fish exhibit had a big sign with many words of which I understood none because they were in Japanese. But looking at the photo I knew immediately what to do, even if I'd been the only visitor.

360 degree viewing tunnel at the Shinagawa Aquarium - 2nd posting by Martin

This is the second post about the Spotted seal exhibit. (Click here if you want to read the first one.)

The 360degree viewing tunnel is what got me most excited about this exhibit. But while I am posting about it, I might as well do a complete job and show the entire seal exhibit.

The aquarium guide calls this new, two story building addition
Observatory for Spotted seal behavior.

Below a bird's eye view. I circled the Spotted Seal building. The main aquarium is to the right of the circle.
 from Bing maps

Below two photos that show the Observatory from the outside. You can see, if you click and enlarge the photo, the main aquarium on the right (white tiled building and probably over 20 years old) and the new Observatory addition in fair-faced reinforced concrete (probably less than 2 years old).

Notice the roof covering the visitor area on the 2nd level and the hole in the middle of the roof, allowing the animals to get a dose of rain or sunshine.
I like it that the animals have access to the outside air with it's ever changing smells. Being open to the elements is something every caretaker or designer should strive to provide for all animals (even fish - if possible. And, agreed, there are climate and disease restrictions for some species, but I would guess for 99% of animals in captivity these restrictions don't apply - or not at all times).

Below a video clip of the above water area - 2nd level deck:

Photos of upper level:

 click photos to enlarge

Allowing the visitors above water and below water within such a small area creates the challenge for any designer. At the Shinawaga Aquarium they solved it with a staircase and an elevator. Neither are ideal in a zoo setting, but sometimes unavoidable.

Photo: visitor staircase to underwater viewing area.

And below a video clip where I take the elevator to the underwater viewing hall.

By making the back wall of the elevator out of glass, the designers turned the ride into part of the exhibit experience; But I'm wondering how much it had cost (glass and extra acrylic, not to mention the maintenance of window cleaning) and I wonder whether this is paying off in terms of overall visitor experience. If you watch the movie clip you'll notice how fast that thing gets me down, which is nice, but doesn't do much for animal observation.

Riding the elevator down I was able to spot a window in the outside facade which allows the seal to look out. Seals are curious critters and there is not much they can see on the upper deck - I loved it for the seal: an exhibit with a view!

Talking about view: There is a hole in the concrete slab allowing the seal to poke their head through.
From below it looks like this:
 From above it looks like this:
Why, I was asking myself, would the seals want to use this hole if they have a much larger open water surface a few feet away? Oddly enough they did. In the roughly fifteen minutes that I spent there, it happened about three times that a seal, suspended upright in the water, kept looking up through the hole. But never long enough for me to take a photo, although I sprinted the staircase two times when I spotted an animal in the hole from below, just to have it dive away when I got there.

The look down glass floor in the tunnel
Glass was used for the floor in the otherwise all acrylic 360 degree viewing tunnel. The glass was "pocked marked" to prevent visitors from slipping. The anti slip worked perfectly: no slip and only minimal impact on the view through the glass.
I was curious what they did to the glass to roughen it up in places.
Here a video of me scratching the glass:

Below a photo of the glass floor: Very transparent despite anti-slip treatment

and a close up of the anti-slip - click image to enlarge

Below a shot through the acrylic hemisphere, and therefore distorted, but notice how light and transparent the floor appears, it almost vanishes.

And two final photos showing the floor

Below: I did a quick, rough sketch of the layout of the underwater exhibit area.

I conclude the posting for the Spotted Seal exhibit with two videos:

for all videos, sketches and photos above ©2010 wild–
unless noted otherwise.

360 degree viewing tunnel at Spotted Seal exhibit at the Shinagawa Aquarium Tokyo by Martin

The spotted seal phoca largha exhibit at the Shinagawa aquarium in Tokyo, Japan, offers great visitor views thanks to two 360-degree glass tunnels, and a large step-in all glass cylinder. There is also a flat acrylic glass panel of about 4 meter length and 2.20 meter height, and two hemisphere-shaped viewing windows. All transparent elements are made of acrylic except for the tunnel floor, which is made of glass.
For the seals I would have liked to see more water surface area, possibly with some water movement (wave machine or  jets), and a larger beach area, but otherwise this exhibit had a lot going for the animals: exposure to the outdoors, and it is probably the deepest seal exhibit that I have seen in my life.

Here is a link to a video that gives a quick overview of the lower part of the exhibit.

And another one:

Here I am standing in front of the flat panel looking into the exhibit. There is a 360 degree viewing tunnel to either side, and two hemisphere windows straight ahead in the rockwork.

I'm following a seal around.

Stroller in the tunnel - above
The tunnel is not round but elliptic, which I think led to less distortion if looked straight at it. It also was good because there was no risk of hitting your head against the glass, or having to make it unnecessarily large because of the head height. Click on photo to enlarge.

Step-in cylinder - above
Here I am standing in the center of the exhibit in a room with glass all round and above except where the two 360 degree viewing tunnel connect. You can see the concrete support structure for the tunnel on the right (black). The ceiling is slightly tilted - you can't see it well in the photo, or even notice it while visiting, but when I reached up I could tell that the ceiling was from about 2 meters to 2.2 meters on the high end near where the two 360 viewing tunnel connect.

Kid on glass floor - above
A kid is standing on glass. The surface has some anti-slip feature. I'll post detail photos soon. 

The layout and the viewing would make this a great penguin exhibit. The only problem is the height difference between above and below water viewing. At the Shinagawa Aquarium they solved this with a staircase for the main visitor flow and an elevator for wheelchairs and strollers. The day I was visiting, on a Sunday afternoon in April,  it worked quite well but neither solution is ideal for large crowds.

bubble machine
A bubble machine doesn't sound very exciting and yet I thought here at the Shinagawa seal tank it was effective,  inciting and  mesmerizing. Adding a nice touch to the tank. The machine throws out bubbles that if the water is calm turn into beautiful circles on their way up. And every other minutes it erupts with a bubble curtain. Best of all: I can't imagine this being expensive or high maintenance.
When I was there the seals where so active that most bubble circles broke up pretty fast - but who cares if you get to see beautiful seals zooming by. But when there was a moment of calm it gave you something else to look at until the next animal came racing around.
I found a  video below, done by slaiyee that gives you a good impression of the bubble machine.

There are lot more details and other features to this exhibit.  I will post them within the next couple days.