Martin Stevens
@wildlifevision.bsky.social
Underwater and wildlife photographer based in Cornwall
The rare & beautiful violet sea snail - a predator of Portuguese Man O’War & by-the-wind sailors. It lives its whole life at the surface of the open ocean, using a bubble raft to stay afloat. It’s normally more common in warmer waters but occasionally seen here
#marinebiology #marinelife #oceanlife
#marinebiology #marinelife #oceanlife
November 17, 2025 at 7:03 PM
The rare & beautiful violet sea snail - a predator of Portuguese Man O’War & by-the-wind sailors. It lives its whole life at the surface of the open ocean, using a bubble raft to stay afloat. It’s normally more common in warmer waters but occasionally seen here
#marinebiology #marinelife #oceanlife
#marinebiology #marinelife #oceanlife
A mauve stinger #jellyfish in front of an avenue of yellow #seaweed. This from last autumn when we had huge blooms of these jellyfish - by contrast I’ve not seen a single one this year.
#CornishWildlife #MarineLife #UnderwaterPhotography
#CornishWildlife #MarineLife #UnderwaterPhotography
October 24, 2025 at 3:04 PM
A mauve stinger #jellyfish in front of an avenue of yellow #seaweed. This from last autumn when we had huge blooms of these jellyfish - by contrast I’ve not seen a single one this year.
#CornishWildlife #MarineLife #UnderwaterPhotography
#CornishWildlife #MarineLife #UnderwaterPhotography
Very fortunate to find another rainbow #seaslug the other day. This was the smallest I’ve seen - about the size of a grain of rice (next to my fingertip for scale).
#cornwallwildlife #nudibranchs #ukunderwater #marinelife #uwphotography
#cornwallwildlife #nudibranchs #ukunderwater #marinelife #uwphotography
October 10, 2025 at 2:28 PM
Very fortunate to find another rainbow #seaslug the other day. This was the smallest I’ve seen - about the size of a grain of rice (next to my fingertip for scale).
#cornwallwildlife #nudibranchs #ukunderwater #marinelife #uwphotography
#cornwallwildlife #nudibranchs #ukunderwater #marinelife #uwphotography
Sea fog around the #Cornwall coast this morning at sunrise. Another stunning start to the day!
#shotoniphone #cornishcoast #ukcoast
#shotoniphone #cornishcoast #ukcoast
September 30, 2025 at 4:50 PM
Sea fog around the #Cornwall coast this morning at sunrise. Another stunning start to the day!
#shotoniphone #cornishcoast #ukcoast
#shotoniphone #cornishcoast #ukcoast
Cuttlefish changing colour over the sand - this is the same #cuttlefish but the sequence of photos shows how it can change its colour and texture for both camouflage and communication.
#marinelife #underwaterphotography #marinebiology
#marinelife #underwaterphotography #marinebiology
September 29, 2025 at 4:33 PM
Cuttlefish changing colour over the sand - this is the same #cuttlefish but the sequence of photos shows how it can change its colour and texture for both camouflage and communication.
#marinelife #underwaterphotography #marinebiology
#marinelife #underwaterphotography #marinebiology
Recent beautiful autumn weather & spring low tides makes for a great chance to find wonderful #rockpool creatures - like these blue-rayed limpets, tiny cushions star (both less than 1 cm in size) and star ascidians.
#marinelife #underwaterphotography #shotoniphone #ukunderwater #britishwildlife
#marinelife #underwaterphotography #shotoniphone #ukunderwater #britishwildlife
September 27, 2025 at 10:31 AM
Recent beautiful autumn weather & spring low tides makes for a great chance to find wonderful #rockpool creatures - like these blue-rayed limpets, tiny cushions star (both less than 1 cm in size) and star ascidians.
#marinelife #underwaterphotography #shotoniphone #ukunderwater #britishwildlife
#marinelife #underwaterphotography #shotoniphone #ukunderwater #britishwildlife
Blue-rayed limpets just beneath the surface. They often gather in groups this time of year on the lower kelp to weather autumn storms.
#shotoniphone #uknature #underwaterphoto #marinelife #marinebiology
#shotoniphone #uknature #underwaterphoto #marinelife #marinebiology
September 21, 2025 at 4:55 PM
Blue-rayed limpets just beneath the surface. They often gather in groups this time of year on the lower kelp to weather autumn storms.
#shotoniphone #uknature #underwaterphoto #marinelife #marinebiology
#shotoniphone #uknature #underwaterphoto #marinelife #marinebiology
Back in the water in #cornwall after quite a long time out and lovely to see some #cuttlefish again. Very autumnal now and pretty rocky underwater!
#marinelife #underwaterphotography #britishwildlife
#marinelife #underwaterphotography #britishwildlife
September 18, 2025 at 3:24 PM
Back in the water in #cornwall after quite a long time out and lovely to see some #cuttlefish again. Very autumnal now and pretty rocky underwater!
#marinelife #underwaterphotography #britishwildlife
#marinelife #underwaterphotography #britishwildlife
About a year ago we had huge blooms of these beautiful (but painful) mauve stinger #jellyfish around the #Cornwall coast. On one day strong onshore winds washed them into the lower #rockpools.
#marinelife #ukunderwater #underwaterphotography #marinebiology
#marinelife #ukunderwater #underwaterphotography #marinebiology
September 15, 2025 at 5:49 PM
About a year ago we had huge blooms of these beautiful (but painful) mauve stinger #jellyfish around the #Cornwall coast. On one day strong onshore winds washed them into the lower #rockpools.
#marinelife #ukunderwater #underwaterphotography #marinebiology
#marinelife #ukunderwater #underwaterphotography #marinebiology
Two tiny #seaslugs from Anilao in the Philippines: Favorinus tsuruganus, which feeds on the eggs of other sea slugs, and a Shaun the sheep nudibranch. Amazing how tiny these creatures are, barely visible to a naked eye.
#marinelife #nudibranchs #underwatermacro #underwaterphotographer #marinebiology
#marinelife #nudibranchs #underwatermacro #underwaterphotographer #marinebiology
September 7, 2025 at 3:00 PM
Two tiny #seaslugs from Anilao in the Philippines: Favorinus tsuruganus, which feeds on the eggs of other sea slugs, and a Shaun the sheep nudibranch. Amazing how tiny these creatures are, barely visible to a naked eye.
#marinelife #nudibranchs #underwatermacro #underwaterphotographer #marinebiology
#marinelife #nudibranchs #underwatermacro #underwaterphotographer #marinebiology
Have you ever seen an #octopus clean and then use the toilet? This individual was outside its den so I set a #gopro to record its behaviour. From Patmos, #Greece. Plenty more film and photos to follow if the trip.
#marinebiology #marinelife #underwaterfilming #wildlife
#marinebiology #marinelife #underwaterfilming #wildlife
August 28, 2025 at 6:13 AM
Have you ever seen an #octopus clean and then use the toilet? This individual was outside its den so I set a #gopro to record its behaviour. From Patmos, #Greece. Plenty more film and photos to follow if the trip.
#marinebiology #marinelife #underwaterfilming #wildlife
#marinebiology #marinelife #underwaterfilming #wildlife
Recently back from a holiday in #Greece, Patmos Island with a bunch of videos and photos from underwater. One of the highlights was the wonderful #octopus.
#shotoniphone #marinelife #underwaterphotography
#shotoniphone #marinelife #underwaterphotography
August 20, 2025 at 6:35 AM
Recently back from a holiday in #Greece, Patmos Island with a bunch of videos and photos from underwater. One of the highlights was the wonderful #octopus.
#shotoniphone #marinelife #underwaterphotography
#shotoniphone #marinelife #underwaterphotography
A beautiful Polycera #seaslug in the shallow waters in a lower #rockpool in #cornwall. Love seeing these creatures.
#underwaterphotography #ukunderwater #marinelife #nudibranch
#underwaterphotography #ukunderwater #marinelife #nudibranch
July 31, 2025 at 7:20 AM
A beautiful Polycera #seaslug in the shallow waters in a lower #rockpool in #cornwall. Love seeing these creatures.
#underwaterphotography #ukunderwater #marinelife #nudibranch
#underwaterphotography #ukunderwater #marinelife #nudibranch
Interested in using your smartphone for #underwater film and photography? I wrote a blog about it and the DiveVolk housing and lenses
www.wildlifevision.com/blog/divevol...
#iphonephotography #shotoniphone #divevolk #underwaterphotography #uwphotography
www.wildlifevision.com/blog/divevol...
#iphonephotography #shotoniphone #divevolk #underwaterphotography #uwphotography
Underwater smartphone photograpy — Wildlife Vision
Underwater photography using smartphones such as iPhones is an accessible way to get into underwater imaging and film making, including for diving, snorkelling, or even in rock pools. Underwater housi...
www.wildlifevision.com
July 24, 2025 at 3:17 PM
Interested in using your smartphone for #underwater film and photography? I wrote a blog about it and the DiveVolk housing and lenses
www.wildlifevision.com/blog/divevol...
#iphonephotography #shotoniphone #divevolk #underwaterphotography #uwphotography
www.wildlifevision.com/blog/divevol...
#iphonephotography #shotoniphone #divevolk #underwaterphotography #uwphotography
Some compass #jellyfish from the last week or so in #cornwall. They’ve come and gone a lot this year and conditions in the water have been very up and down again, with huge jumps in water temperature.
#marinebiology #cornwallunderwater #underwaterphotography #marinelife
#marinebiology #cornwallunderwater #underwaterphotography #marinelife
July 12, 2025 at 8:57 AM
Some compass #jellyfish from the last week or so in #cornwall. They’ve come and gone a lot this year and conditions in the water have been very up and down again, with huge jumps in water temperature.
#marinebiology #cornwallunderwater #underwaterphotography #marinelife
#marinebiology #cornwallunderwater #underwaterphotography #marinelife
Some #macro shots of little crabs in the #rockpools - a baby edible crab and common hermit crab. Taken on an iPhone with a DiveVolk housing and macro lens.
#underwateruk #marinelife #underwaterphotography
#underwateruk #marinelife #underwaterphotography
July 4, 2025 at 7:48 AM
Some #macro shots of little crabs in the #rockpools - a baby edible crab and common hermit crab. Taken on an iPhone with a DiveVolk housing and macro lens.
#underwateruk #marinelife #underwaterphotography
#underwateruk #marinelife #underwaterphotography
I wrote this article for Reflections to accompany some of my images on the changes happening to the wildlife around the Cornish coast including some of the new species we’re seeing here
#marinebiology #marinelife #ukunderwater #britishnature #cornwallcoast
www.reflections.site/stories/how-...
#marinebiology #marinelife #ukunderwater #britishnature #cornwallcoast
www.reflections.site/stories/how-...
How Cornish waters are adapting to alien species
How Cornish marine habitats and species are adapting to non-native invasive species
www.reflections.site
June 18, 2025 at 1:17 PM
I wrote this article for Reflections to accompany some of my images on the changes happening to the wildlife around the Cornish coast including some of the new species we’re seeing here
#marinebiology #marinelife #ukunderwater #britishnature #cornwallcoast
www.reflections.site/stories/how-...
#marinebiology #marinelife #ukunderwater #britishnature #cornwallcoast
www.reflections.site/stories/how-...
A tiny Facelina auriculata #seaslug from a little earlier this year in a #rockpool. One of the most beautiful species we get here.
#marinelife #underwaterphotography #ukunderwater #ukwildlife
#marinelife #underwaterphotography #ukunderwater #ukwildlife
June 11, 2025 at 7:49 AM
A tiny Facelina auriculata #seaslug from a little earlier this year in a #rockpool. One of the most beautiful species we get here.
#marinelife #underwaterphotography #ukunderwater #ukwildlife
#marinelife #underwaterphotography #ukunderwater #ukwildlife
Some more #underwater scenery from the spring here in #cornwall
June 6, 2025 at 2:54 PM
Some more #underwater scenery from the spring here in #cornwall
Very happy to have seen my first crystal jelly of the year - they were once rare to see in the uk but are now common around #Cornwall in the summer.
#marinelife #jellyfish #ukwildlife #underwaterphotography #marinebiology
#marinelife #jellyfish #ukwildlife #underwaterphotography #marinebiology
May 31, 2025 at 4:13 PM
Very happy to have seen my first crystal jelly of the year - they were once rare to see in the uk but are now common around #Cornwall in the summer.
#marinelife #jellyfish #ukwildlife #underwaterphotography #marinebiology
#marinelife #jellyfish #ukwildlife #underwaterphotography #marinebiology
Took a bit longer this year but finally saw my first #jellyfish - a stunning blue jelly
#cornwallcoast #marinelife #ukunderwater #underwaterphoto
#cornwallcoast #marinelife #ukunderwater #underwaterphoto
May 26, 2025 at 6:36 AM
Took a bit longer this year but finally saw my first #jellyfish - a stunning blue jelly
#cornwallcoast #marinelife #ukunderwater #underwaterphoto
#cornwallcoast #marinelife #ukunderwater #underwaterphoto
The #seaweed is looking beautiful right now around the #cornwall coast. This is rainbow wrack, which is a bright iridescent blue-green when it catches the light
#underwaterphotography #ukunderwater #marinelife #marinebiology
#underwaterphotography #ukunderwater #marinelife #marinebiology
May 16, 2025 at 3:48 PM
The #seaweed is looking beautiful right now around the #cornwall coast. This is rainbow wrack, which is a bright iridescent blue-green when it catches the light
#underwaterphotography #ukunderwater #marinelife #marinebiology
#underwaterphotography #ukunderwater #marinelife #marinebiology
It’s raining this morning but we’ve had beautiful weather lately in #cornwall and the underwater environment is bursting with life.
#ukunderwater #marinewildlife #marinelife #underwaterphotography #uknature
#ukunderwater #marinewildlife #marinelife #underwaterphotography #uknature
May 11, 2025 at 6:22 AM
It’s raining this morning but we’ve had beautiful weather lately in #cornwall and the underwater environment is bursting with life.
#ukunderwater #marinewildlife #marinelife #underwaterphotography #uknature
#ukunderwater #marinewildlife #marinelife #underwaterphotography #uknature
The comb jellies have arrived inshore in #Cornwall now - always amazing to watch them shimmer with their iridescence in the sunshine.
#ukunderwater #marinelife #underwaterphotography #ukwildlife #marinebiology
#ukunderwater #marinelife #underwaterphotography #ukwildlife #marinebiology
May 5, 2025 at 2:38 PM
The comb jellies have arrived inshore in #Cornwall now - always amazing to watch them shimmer with their iridescence in the sunshine.
#ukunderwater #marinelife #underwaterphotography #ukwildlife #marinebiology
#ukunderwater #marinelife #underwaterphotography #ukwildlife #marinebiology
A little stalked jellyfish in a #rockpool just beneath the surface. Apparently these kaleidoscope ones can cartwheel to new seaweeds when they want to move!
#marinelife #ukunderwater #underwaterphotography #ukwildlife #uwphoto
#marinelife #ukunderwater #underwaterphotography #ukwildlife #uwphoto
April 28, 2025 at 5:11 PM
A little stalked jellyfish in a #rockpool just beneath the surface. Apparently these kaleidoscope ones can cartwheel to new seaweeds when they want to move!
#marinelife #ukunderwater #underwaterphotography #ukwildlife #uwphoto
#marinelife #ukunderwater #underwaterphotography #ukwildlife #uwphoto