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
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
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
Beautiful conditions the other day and lots of life returning to the shallow waters around Cornwall
#marinelife #uwcornwall #ukwildlife #underwaterphotography #seaweed
#marinelife #uwcornwall #ukwildlife #underwaterphotography #seaweed
April 19, 2025 at 7:21 AM
Beautiful conditions the other day and lots of life returning to the shallow waters around Cornwall
#marinelife #uwcornwall #ukwildlife #underwaterphotography #seaweed
#marinelife #uwcornwall #ukwildlife #underwaterphotography #seaweed
Not long until these #jellyfish hopefully return to the waters around #Cornwall - wonderful things to photograph
#underwaterphotography #marinelife #ukunderwater
#underwaterphotography #marinelife #ukunderwater
April 8, 2025 at 2:02 PM
Not long until these #jellyfish hopefully return to the waters around #Cornwall - wonderful things to photograph
#underwaterphotography #marinelife #ukunderwater
#underwaterphotography #marinelife #ukunderwater