Emil
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bergylta.bsky.social
Emil
@bergylta.bsky.social
260 followers 530 following 45 posts
Marine biologist, Scuba diver, underwater photographer and overall sea enjoyer from the dark cold waters of Sweden.
I specialize in Nordic benthic marine macrofauna
May or may not be found in a corner drinking coffee
🦑🪼🪸
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bergylta.bsky.social
This year has been quite good for Surmullet (Mullus surmuletus) in Sweden, especially on night dives, saw several this past weekend. 🤿🐙🦑
Taken 9/11 2025
Camera Olympus TG-5
#aquaticlife #marinelifephotography #naturephotography #nordicdiving #scuba #underwaterphotography
A close up photo of a pale fish with red marbling resting on a shell-gravel seafloor. The fish is facing straight towards the viwer. A close up photo of a pale fish with red marbling and faint horizontal yellow stripes resting on a shell-gravel seafloor. The fish is on the right side of the photo, showing a slight side profile. A close up photo of a pale fish with red marbling and faint horizontal yellow stripes resting on a shell-gravel seafloor. The fish is on the left side of the photo, showing a slight side profile. A close up photo of a pale fish with red marbling and faint horizontal yellow stripes resting on a shell-gravel seafloor. The fish is on the right side of the photo, facing away from the viewer, showing a slight side profile.
November 11, 2025 at 10:07 AM
bergylta.bsky.social
#MolluscMonday with piping fresh mollusc photos from the weekend, this time we got the Velvet dorid (Jorunna tomentosa) as our featured species, this is one of the larger species found in Sweden, so often quite easy to spot.
Taken 12/7 2025 at Fossens Camping, Gullmarsfjorden, Sweden
Olympus TG-5
Photo of a pale-yellow sea slug crawling towards the camera from a slight front-side perspective. The seaslug is crawling on a brownish-grey sediment seafloor. Photo of a pale-yellow sea slug crawling straight towards the camera. The seaslug is crawling on a brownish-grey sediment seafloor.
July 14, 2025 at 10:09 AM
bergylta.bsky.social
Once again it is #MolluscMonday with piping fresh mollusc photos from the weekend, this time a for me new species, the Crystal sea slug (Antiopella cristata), and i have to admit, it is one of the prettiest nudibranchs i've ever seen 🦑🤿
Taken 6/6 2025
Camera Olympus TG-5
Close up photo of a sea slug with its back covered in transluscent appendages, each appendage has a vibrant blue tip. The seaslug is crawling on yellowish-brown algae Close up photo of a sea slug with its back covered in transluscent appendages, each appendage has a vibrant blue tip. The seaslug is crawling on yellowish-brown algae
June 9, 2025 at 1:07 PM
bergylta.bsky.social
#MolluscMonday is here again, and after a longer hiatus, i have been able to get into the water once more
This time it was mainly Orange-brown aeolids (Aeolidiella glauca), a rather unassuming species of nudibranch
Taken 3/5 2025 in Gullmarsfjorden
🦑🤿
a small brownish seaslug crawling away from the viewer, the perspective is from above and slightly behind A small grey-ish seaslug with white "antennae" crawling down a wall A small grey-orange seaslug crawling towards the viewer A small brown-ish seaslug with white antenna-tips crawling over some algae towards the camera
May 5, 2025 at 2:07 PM
bergylta.bsky.social
Another week, another #MolluscMonday, and once again, there's piping hot fresh nudi photos from the weekend. 🦑🤿
This week we have the nudibranchs Acanthodoris pilosa and Dendronotus lacteus
Taken 15/3 2025
Camera: Olympus TG-5
Close up photo of a white Acanthodoris pilosa seaslug crawling downwards on a piece of brownish algae, the seaslug is covered in small knobs all along its body. Close up photo of a white Acanthodoris pilosa seaslug crawling towards the viewer on a brown seafloor, the seaslug is covered in small knobs all along its body. Close up photo of a white Acanthodoris pilosa seaslug crawling upside down on a piece of brown algae, the seaslug is covered in small knobs all along its body. A large white seaslug with tree-like branching growths on its back, the seaslug is crawling on some red algae
March 17, 2025 at 6:56 PM
bergylta.bsky.social
A rainy and cold #MolluscMonday it is, but this week, I once more got some piping hot nudibranchs fresh from the cold seas of Sweden.
Taken: 23/2 2025
Camera: Olympus TG-5

🦑🤿
White seaslug with yellow spots crawling on greyish-brown soft mud Front-facing brown seaslug with a slight yellow tinge crawling towards the camera on brown mud Close up of a large dark-brown seaslug with a slight yellow tinge crawling towards the camera on brown mud
February 24, 2025 at 4:33 PM
bergylta.bsky.social
This #MolluscMonday we got some piping hot fresh nudibranch photos :)
A Coryphella verrucosa and what i think is a Idaliadoris depressa(?)
Both taken 9/2 2025
🤿🦑
Photo of a tiny white semitransparent nudibranch with a "fuzzy" look to it, the nudibranch is crawling on a piece of algae. Photo of a seaslug possessing reddish-brown "spines" with stark white tips, the nudibranch is crawling on a piece of dark-brown seagrass.
February 10, 2025 at 3:58 PM
bergylta.bsky.social
What better way to start the week than with a cute little bobtail squid (unsure if Sepietta oweniana or Sepiola atlantica) for #MolluscMonday?
These cuties are present all year round, but prefer to be out after dark, which is hard in summer here
Taken 2023-11-04 on Divers Night in Lysekil
🤿🦑
Close up photo of a small red squid peeking out of the soft sediment, the eyes take up a large part of the head and have a slight silvery sheen to them Close up photo of a small red squid on shell-gravel seafloor, the squid is facing the viewer with its large eyes that have a silvery sheen to them.
January 27, 2025 at 9:26 AM
bergylta.bsky.social
Who is featured this #WormWednesday? Well that would be the King ragworm (Alitta virens), sometimes known as Sandworm. While it may not reach the sizes of its sci-fi counterpart of Arraksis, it is a species that can grow to quite the size (20-30 cm according to Artfakta.se)
Taken 9/5 2021
🤿🦑
A large blue-green polychaete worm crawling among brown algae on a beige shell gravel seafloor Close up face of a blue-green polychaete worm with a metallic sheen, the worm is crawling among some brown algae
December 11, 2024 at 4:56 PM
bergylta.bsky.social
Oh Worm? Another week, another #WormWednesday, still no good worm photos this year, so I got a Sea mouse (Aphrodita aculeata) from last year instead for now.
In my opinion, it is one of the prettier polychaetes we got in the Nordic seas :)
🦑🤿
Taken: 30/04/2023
Camera: Olympus TG-5
Sediment-covered scaleworm with iridescent green-gold bristles on the side of its body, the worm is facing slightly sideways towards the viewer while crawling on a greyish beige soft bottom seafloor. Close up of the green-gold bristles on a Sea mouse scaleworm, the bristles are really shining and glittering Sediment covered scaleworm with iridescent green-gold bristles crawling on a brownish beige soft bottom, the perspective is from the side and slightly from the above
November 27, 2024 at 1:21 PM
bergylta.bsky.social
Well would you look at that, it is #WormWednesday, sadly i don't got any good worm photos this year, but here, have a Oxydromus flexuosus (unsure if it has a English common name, in Sweden we call it "Green-white flailing worm") that i took a few years ago
Taken 13/11 2021, Camera: Olympus TG-5
🦑🤿
Dark-brown polychaete worm with neon-green banding on its body and neon-green dots along its sides. The worm is facing away from the viewer on a beige sandy bottom. Due to the zoom of the photo, the sand grains appears as very coarse, but is in fact very fine-grained.
November 20, 2024 at 8:45 AM
bergylta.bsky.social
I was recently tipped off by another local marine biologist that "Mud diver shrimp" (Processa nouveli) is a thing, and well... they are quite common on night dives. So you learn something new every day, had completely overlooked these cuties while over the soft bottom looking for 🦑
Close up photo from the front of a small pinkish shrimp with white front legs and iridescent blue-grey eyes. The shrimp is crawling on a beige soft mud seafloor and looking straight into the camera lens Close up head photo of a small semi-transparant shrimp with white legs and reddish orange pigment dots on its body, the eyes are a irridescent blue-grey colour. the photo is taken slightly from behind the shrimp. The shrimp is crawling on a beige-brown soft mud seafloor Close-up side profile photo of a small semi-transparant shrimp with orange-red pigment dots, white legs and blue-grey eyes. The shrimp is crawling on a beige-brown soft mud seafloor
November 12, 2024 at 6:52 PM
bergylta.bsky.social
A bit late for #WorldJellyfishDay because I totally did not forget the date or anything, Nuh uh ‹_‹.
Aaaanyways, have a Crystal Jellyfish (Arquorea vitrina) taken on Divers night in Lysekil 2024 🤿🪼🦑
Transparent Jellyfish with a blue tinge and opaque rib-like structures inside its body. Hovering over a sandy beige seafloor, surrounded by bright green stalks of seagrass.
November 3, 2024 at 11:50 PM
bergylta.bsky.social
Well would you look at that, it is #SeaslugDay! time to post some nudibranch photos, this photo of a Facelina bostonensis, which we call Dragon nudibranch in Sweden, was taken in November last year, nudibranch season hasn't quite started up in my area just yet, but soon 🤿🦑
A photo of a Facelina bostonensis seaslug facing the camera, with beautiful orange-beige cerata tipped with white
October 29, 2024 at 8:22 PM
bergylta.bsky.social
Haven't posted on my scuba blog in ages, but i guess here goes? The latest underwater adventures in the cold nordic waters :)
🤿🦑
swedishdiving.blogspot.com/2024/06/jord...
Jordfalls hamn 9/6 2024 Eh? is this thing still on?
A Swedish diver's adventures in the Nordic waters, done in a way similar to a divers log book
swedishdiving.blogspot.com
June 14, 2024 at 12:36 PM
Reposted by Emil
fiskeforbrains.bsky.social
Scientists raise the alarm: Too many harbour porpoises dying in nets.

In Danish coastal waters over 900 die each year vs a 24 death limit that would keep Belt Sea population stable. In 2012 & 2016, there were around 40.000 individuals, by 2022, only 14.000 left.  🧪🦑🌎

tech.au.dk/en/about-the...
"A dead harbour porpoise on the beach in Løkken, Denmark. Part of the net that it got entangled in is still visible. It's estimated that 900 harbour porpoises die every year as by-catch in the fishing industry. Photo: Lisbeth Cedray"
March 11, 2024 at 11:59 AM
bergylta.bsky.social
Finally broke my long surface interval from diving this weekend, while waters were cold, it was so nice to be back in business! Got some photos too, but i forgot to turn off the camera between the dives, so it ran out of battery on the second dive, when all the nicer things showed up 🤪
🦑🤿
White, semi-transparent, nudibranch with branching cerata crawling on a pink-encrusted piece of shell. The species is likely Dendronotus frondosus A close up photo of a oat-pipe hydroid from the side, with its tentacles splayed out, the colour is pinkish with transparent tentacles and a beige stem A sea anemone with a beautiful pattern of white and dark brown on the oral disc, at the base of the tentacles. A stark white line runs from the mouth to the base of the tentacles, towards the viewer Sea anemone with a pinkish-red oral disc, and darker red triangle patterns on the oral disc, sitting on a sediment covered rock.
March 11, 2024 at 10:15 AM
bergylta.bsky.social
Another Wednesday, another reason to be pink.
This is a Bryer's Nut crab (Ebalia tumefacta), a tiny species of crab that can be found on sandy, rocky and gravel seafloors. this particular individual was seen during Diversnight in Lysekil 2023 (no clue how i even spotted it)
🦑🤿📷🦀
A very small crab with very small eyes and a pink carapace, walking over shell gravel, there is some dust on the carapace itself as well
February 21, 2024 at 11:06 AM
bergylta.bsky.social
On Wednesday we wear pink!
Though the name of the nudibranch is Violet sea slug (Edmundsella pedata), i'd say this one from Väderöarna archipelago is of a sufficiently pinkish colouration, right?
🤿🦑 #Nudibranch
Photo date: 2021 07 24
Camera: Olympus TG-5
Puprple-pink coloured nudibranch with beautiful white "spine-tips" and tip of antennae, crawling on yellowish brown algae, the animal is facing away from the camera
February 14, 2024 at 6:10 PM
bergylta.bsky.social
Happy flatworm Friday everyone, here have some Candy-striped flatworm (Prostheceraeus vittatus) photos taken July and September last year 🦑 🐛
White flatworm with black, lengthwise, stripes on a rocky substratum facing forward towards the camera White flatworm with black, lengthwise, stripes crawling on a algae covered rock, the photo is a bit more zoomed out, showing the whole body White flatworm with black, lengthwise, stripes crawling on a algae covered rock, slight yellow tinge to the creature due to the lighting from the camera rig
February 9, 2024 at 5:49 PM
bergylta.bsky.social
Hello there bluesky!
I have come here to marine biologist and chew bubble-gum, and i am all out of bubble-gum
#MarineLife
🦑
Angular crab male showing off that he is big and not to be messed with, never mind that even with claws, he is the size of my hand.
February 7, 2024 at 2:49 PM