Seafrogs camera housing for E-M1

 

 

I bought Seafrogs camera housing for E-M1 this summer. It’s waterproof is reliable. But, l have some complaints.

1. Very light compared to it’s size. For stabilizing underwater photographing, weights should be attached.

2. Hot Shue is too narrow for attaching Inon S2000 strobe.

3. M.zuiko 12-40 f2.8 lens is available for default use. It can be used zoom without any options. But only 20-40mm Focal length can be used because of kerare.

4. M.zuiko 12-40 f2.8 lens Manual Focus 
Clutch is unconsciously changed to MF mode during setting camera to housing. And deeply disappointed in the water.

Nevertheless, I should get use to it because it’s low price has much enough merit.

Mudskippers in Tokyo bay

Periophthalmus  modestus

In some limited mudflat along the Tokyo bay, 

Mudskipper,Periophthalmus modestus,still sustain their lives. In autumn they exclusively eat small creatures or rest in the small pools on the mudflat. Maybe next month,they will go their nest under the mud and wait next spring coming.

Like a stone

 Cottus Kazika

The four spine sculpin,Cottus Kazika,is the biggest freshwater sculpin in Japan. This species sometimes reaches 30cm. The big one doesn’t move even if diver closes to 15cm near him. He looks like a stone on the riverbed and he also believes him a stone.
 

The habitat of Cottus Kazika

Chiyoboinari

Over 15 Freshwater fish restaurants are placed along the 700m road that leads to Chiyoboinari shrine in Gifu pref,Japan. Here,we can eats catfishes,carp and eels ... and so on. I think here is one of the most dense freshwater fish restaurant area in the world.

Female always knows

Early September was too late for observing spawning behavior of pink salmon,Oncorhynchus gorbuscha ,in Shiretoko world heritage,Japan .

Almost all of females had finished spawning . They were guarding their spawning reds and attacked approaching males.

Females always know what they should do.

The goal of their lifecycle

In September, you can see lots of salmonidae fishes migrating upstream for spawning in Shiretoko world Heritage,Japan.

The scene is very spectacular.But a little unfortunately, most of them will be captured and their eggs will be artificially inseminated.

I hope the day will come that all of them maintain their population by their natural spawning.

The hair band (in Japanese "Hachimaki")

Kanehira(Acheilognathus rhombeus) is one of the species which spawn in autumn.

Bitterlings present remarkable secondary sex characteristic in the spawning season.
All male bitterlings have very beautiful nupitial coloration.It seems that there are strong competition among males struggling for limited spawning resources,freshwater mussels.
It is not too much to say that male Kanehira is the most beautiful species among such beautiful bitterlings.

When I was a graduate school student, I talked about the beauty of male Kanehira with my professor.
In the conversation I emphasised the beauty of it's green and pink body color.
One the other hand, my professor said "I think the best point is it'  Hachimaki (in English "Hair band")"
"Hachimaki?"I repied.
So, I couldn't understand what he said at that time.

After several years, when I took their under water photos and watched pictures,I understood.
I see.
White and silver running through their forehed seems the strong will to the next generation.