Critters of the Lembeh Strait | SEA WARS – Blue-ring Octopus

Did you know that the deadly, highly venomous blue-ring octopus cannot tell the sex of another blue-ring at first sight? They have to feel the other one first in order to be able to figure it out. An encounter can be witnessed in this video where two blue-ring octopuses (Hapalochlaena sp.) meet each other for the first time. Love at first sight or disaster date? Watch to find out!

 

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Critters of the Lembeh Strait | Episode 12 – 2016 | November Highlights

You asked for mantis shrimps, and you got them! OK, even if you didn’t ask for them, November’s highlights include some fascinating behavior (what were the mantis shrimps doing?!) and weird wildlife. A rare Polycera nudibranch (check out that beard!) makes an appearance feasting on red arborescent bryozoans, a wunderpus (Wunderpus photogenicus) pulsates color change on its eye-stalks and a rare green shrimp with eggs flexes its brood. Bonus points for you if you spot the bobtail squid covering itself with sand, one of the cutest things you can see when night diving in Lembeh Strait. Enjoy!

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Critters of the Lembeh Strait | SEA WARS – The Frogfish Strikes Again

Frogfishes are a member of the anglerfish family and eat pretty much everything, shrimps, fish and even other frogfish. The strike itself is accomplished with the sudden opening of the jaws, which enlarges the size of the mouth up to 12 times, pulling the prey into the mouth along with water. The water flows out through the gills, while the prey is swallowed and the food pipe closed with a special muscle to keep the victim from escaping. In addition to expanding their mouths, frogfish can also expand their stomachs to swallow animals up to twice their size.

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Critters of the Lembeh Strait | Eat dessert first

This little clown frogfish (Antennarius maculatus) obviously did not eat his dessert first! Frogfish tend not to be picky eaters and have been known to eat just about any creature that is close enough and that will fit in their mouth (including other frogfishes of the same species) but this shrimp seemed to not suit his palate. It’s anyone’s guess as to why he spit it out – did he eat the good parts and expel only the hard shell? Was it an awkward shape and difficult to swallow? What do you think?

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Critters of the Lembeh Strait | SEA WARS – Fighting Mandarin Fish

It’s hard to believe such a beautiful species as the mandarin fish (Synchiropus splendidus) can be so cut-throat when it comes to territorial battles, but make no mistake, these guys don’t mess around when another male comes in to try and muscle in on their harem. Finally the ‘sheriff’ makes an entrance at the end and breaks up the dirty fight!

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Critters of the Lembeh Strait | Episode 10 – 2016 | September Highlights

We guarantee you have never before seen some of the crazy critter action featured in this week’s video; have you ever seen a video close up of the eye of an elegant sand diver? No? What about this eye with a shrimp on it? Didn’t think so. This and many more bizarre and beautiful surprises in this will make you wish you were here. What was your favorite part?

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Critters of the Lembeh Strait | Episode 09 – 2016 | August Highlights

This time of year often brings slightly cooler water temperatures in Lembeh and to our delight, we’ve noticed many more baby frogfishes are around than normal. Coincidence? We think not! Some of these ultra-cute froggies are in this video as well as footage of rare nudis like the Phyllodesmium koehleri and one of the weirdest, most unusual critters we’ve ever seen – a bizarre polychaete worm (Diopatra Sp.) that looks like a cross between a bobbit worm and a furry-legged bristle worm! Enjoy this up-to-the-minute glimpse of what’s going on in Lembeh.

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Critters of the Lembeh Strait – Episode 03 – 2016 | Frogfishes

This February is all about frogfishes…here’s a short video of some of the common species we usually see while diving the Lembeh Strait – Enjoy!

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SONY A7RII with SONY FE 90mm F2.8 Macro G OSS & Reefnet SubSee +5 or Nauticam SMC

SONY A7RII with a 90mm macro lens – Image size comparison with the SubSee +5 and the Nauticam SMC

I was checking out different options of so called “wet-lenses” on the SONY A7RII in a Nauticam NA-A7II housing. I used the SONY FE 90mm F2.8 Macro G OSS lens without a wet-lens, with SubSee +5 and with the Nauticam SMC and compared the subject sizes at maximum magnification.

When using no “wet-lens” in Super 35mode, the image size is very similar to when using a SubSee+5 in Full Frame mode & when using a SubSee+5 in Super 35 mode the image size is very similar to when using a SMC in Full Frame mode.
The difference is that you have 42MP in Full Frame mode vs 18MP in Super 35 mode. Of course when shooting stills we want to have the full 42 MP (why else would we pay for them), but the Super 35 mode becomes really handy when shooting video. In both modes the A7RII is recording 4K in camera. It’s like having an extra teleconverter with you while diving. When I’m shooting video I try to use the Super 35 mode whenever possible, but when the subjects are a bit larger, it’s very nice to be able to shoot in full frame mode and get a tick closer.

Here are some images with my results:

SUBSEE-SMC-A7RII

All images taken at F18, 1/125sec, ISO ranged from 1250 – 2000 (I had the camera on AUTO ISO)

Final conclusion: For shooting video with the A7R2 there’s no need for the SubSee +5, but it can be useful when shooting stills. I will do some more testing and keep you posted.

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