Keishu Asada's Avatar

Keishu Asada

@cephwarden.bsky.social

A warden of Sand Quentin. Videographer and photographer, mostly of marine wildlife. Marine Fieldwork Specialist at the Okinawa Institute of Science and Technology (OIST), Marine Science Section.

1,034 Followers  |  68 Following  |  301 Posts  |  Joined: 03.05.2023  |  1.9151

Latest posts by cephwarden.bsky.social on Bluesky

Not related to this post, but I just wanted to say I'm finally getting around to play Subnautica: Below Zero and your creature designs are fantastic.

23.10.2025 05:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I struggle to understand the perspective of posting a video of you shitting yourself and thinking this is mocking anyone else but yourself.

21.10.2025 02:45 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

"on-demand AI-generated TV and movies"

You know that awkward moment when someone is talking excitedly about some obscure TV show that no one else cares about and everyone is just politely feigning interest until they stop talking? They are promising all media will be like that

15.10.2025 07:53 β€” πŸ‘ 12    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

Since Duolingo decided to basically brick its app with the new 'energy' system that won't let you get through three lessons in a day, does anyone know any decent Duolingo alternatives?

14.10.2025 13:35 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

I have a feeling that every legacy news org besides Fox will always be seen as the "liberal media" by the audience they're trying to appease now. That perception is entrenched and they won't grow viewers this way.

I guess the risk is converting naive viewers who are unaware of the regime change.

03.10.2025 00:52 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Just yesterday, the Trump admin banned the use of terms like 'climate change' and 'emissions' at the Department of Energy, even on internal documents. They are not even allowed to discuss it amongst themselves. Let the callous madness of that sink in.

02.10.2025 10:26 β€” πŸ‘ 8    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Okinawa had its hottest September at 1.6C above the average. I filmed this mass coral bleaching last year, but didn't have the heart to share. Total annihilation of the first few meters of depth. This stuff happens before our eyes, and yet people who think it isn't real keep gaining power.

02.10.2025 10:24 β€” πŸ‘ 92    πŸ” 38    πŸ’¬ 2    πŸ“Œ 2

I'll have to admit, there's a self-own in the notion that "what the administration said they will do is insufficient evidence of what they will do", but it helps no one

02.10.2025 01:51 β€” πŸ‘ 14    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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Yajaagama cave: Turning back at the clearing and heading out.

01.10.2025 23:23 β€” πŸ‘ 10    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Yajaagama cave: Human bones. The cave is a historical burial ground with many broken urns. The remains are placed in several places, like the clearing at the end. Apparently the locals are fine with leaving them be.

01.10.2025 23:19 β€” πŸ‘ 7    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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The exit of Yajaagama. You're supposed to turn around at this clearing, although the cave actually continues just beyond it. You can see that this clearing was once part of the cave that has collapsed.

01.10.2025 23:16 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Parts of the cave look like it's melting. The dark specs here are inse.. cts.A species or subspecies of cave cricket (γ‚―γƒ‘γ‚«γƒžγƒ‰γ‚¦γƒž). These are one of the most common things in the cave, although I couldn't find much information on them.

01.10.2025 23:09 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Yajaagama cave: Close to the exit, there were this endemic subspecies of ground gecko, Goniurosaurus kuroiwae yamashinae. Beautiful stripes.

01.10.2025 23:07 β€” πŸ‘ 12    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Yajaagama cave: Parts of the cave have glittering minerals. Sometimes they form beautiful little terraced pools.

01.10.2025 23:05 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Yajaagama cave: In many places it looked like there were veins of gold or some such mineral, but up close they turn out to be growths of lichen, covered in little droplets of water so they glitter.

01.10.2025 10:50 β€” πŸ‘ 25    πŸ” 3    πŸ’¬ 0    πŸ“Œ 1
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Yajaagama cave: The ceilings were the domain of the oogeji (Thereuopoda clunifera), a type of centipede. They are about 10cm long I think. Never seen ones this huge, or so many. It's not one of the endemic species however.

01.10.2025 10:44 β€” πŸ‘ 8    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Yagaajima cave: This is a species of land-dwelling isopod endemic to Kume, with distinct yellow spots. It has a Japanese common name but is a scientifically undescribed species (Ligia sp.). Here in the cave it is 800m away from the closest seashore, where isopods of this genus are usually found.

01.10.2025 10:40 β€” πŸ‘ 46    πŸ” 9    πŸ’¬ 1    πŸ“Œ 0
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Yajaagama, a cave on Kume Island. Supposed to be 800m long and closed off at various points, some areas for bat conservation, some because they are unsafe. Filled with endemic wildlife, darkness, and human bones.

01.10.2025 10:36 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The footage quality is poor, but this is a rare Rhina ancylostoma, bowmouth guitarfish, seen in Oura Bay (Okinawa), where they are building a new US marine corps base. It's a type of ray. I've never seen one in the wild before!

08.09.2025 22:52 β€” πŸ‘ 24    πŸ” 3    πŸ’¬ 0    πŸ“Œ 1
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Rain and rainbow

04.09.2025 22:54 β€” πŸ‘ 8    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Sneaky stonefish.

24.06.2025 23:17 β€” πŸ‘ 8    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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I was looking at the many orange sponges in area thinking 'it would be cool if one of these was a frogfish'. And one of them was.

22.06.2025 23:08 β€” πŸ‘ 40    πŸ” 7    πŸ’¬ 1    πŸ“Œ 2
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An Octopus cyanea - when you are at your most beautiful when you are barely visible at all

19.06.2025 22:51 β€” πŸ‘ 26    πŸ” 7    πŸ’¬ 0    πŸ“Œ 0
Physalia megalista, a cnidiran with a gas filled float, raised sail, and long blue tentacles hanging below. Image credit: Dalila Destanović

Physalia megalista, a cnidiran with a gas filled float, raised sail, and long blue tentacles hanging below. Image credit: Dalila Destanović

Excited to share our study on sailing siphonophores, AKA bluebottles or man-o'-war! 🌊 we received hundreds of samples from scientists around the world, part of a huge effort to sequence genomes and test for multiple species 🧬 out today in @currentbiology.bsky.social doi.org/10.1016/j.cu... πŸ¦‘πŸ§ͺπŸ“Œ

19.06.2025 19:51 β€” πŸ‘ 172    πŸ” 50    πŸ’¬ 2    πŸ“Œ 6
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Cathedral sunbeams

18.06.2025 22:32 β€” πŸ‘ 33    πŸ” 7    πŸ’¬ 0    πŸ“Œ 0
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A marbled stingray foraging at dusk, having come up from the deep as soon as the sun started to set

17.06.2025 23:12 β€” πŸ‘ 10    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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A sea elephant (heteropod) flapping its lazy way through the night. Something about the motion of its fin is weird and hypnotic.

17.06.2025 11:23 β€” πŸ‘ 28    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
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A polychaete worm jives with a solitary dance number in the darkness

16.06.2025 22:47 β€” πŸ‘ 27    πŸ” 5    πŸ’¬ 0    πŸ“Œ 1
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Returning to land at sundown, sometime last year

16.06.2025 11:53 β€” πŸ‘ 7    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Glad you did! That worm-ball -a cluster of parasitic trematodes in what is presumably their 'lure' phase so they would be eaten by their next host- still goes down as probably the most tantalizing and bizarre mystery I have encountered in the sea.

16.06.2025 00:58 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

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