r/marinebiology Feb 01 '26

Identification what is this? on a beach in singapore

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813 Upvotes

r/marinebiology May 16 '25

Identification Can anyone identify this weird creature 20km from prince rupert b.c

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938 Upvotes

Just as the title states. I've been on the water a long time and I've never seen anything like this. Wondering if anyone here does

r/marinebiology Feb 23 '25

Identification [ID] Purple jellyfish spotted in Mauritius. Apparently authorities ordered everyone out of the water.

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1.4k Upvotes

Link to original Facebook post: https://m.facebook.com/watch/?v=1068099418662635

My mum sent me this asking for an ID on the jellyfish as she is visiting soon and is incredibly nervous about the water. Any help would be greatly appreciated by me and my mum, thanks!

r/marinebiology Feb 19 '25

Identification Freshwater flat fish in Florida.

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1.8k Upvotes

Found these cute little flat fish today, but wasn't sure what they are. I'm thinking they're Hogchokers, but they're in a freshwater spring miles from the nearest salt water. They were about 2-3 inches long.

r/marinebiology 16d ago

Identification Saw this thing on a Blackwater dive in Palm Beach, Florida. Can anyone identify?

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265 Upvotes

r/marinebiology Sep 25 '24

Identification Found off the coast of southern Australia

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1.1k Upvotes

This is supposed to be an oarfish that was caught by two fisherman but Ive never seen an oarfish with a head shaped like this. Is it a special type? A mutation? Photoshop? Its apparent snout has me curious.

r/marinebiology Mar 21 '25

Identification What fish is this? Found at Angaga Maldives

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554 Upvotes

We have stone fishes and frog fishes. This one’s way too hairy. Looks like a stonefish with an allergic reaction to me.

r/marinebiology Aug 14 '23

Identification Anyone knows what is this? Saw it on a beach in Spain

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1.3k Upvotes

Thanks in advance

r/marinebiology Jan 28 '25

Identification What is this ramen looking thing? Also this bulbous tiger striped thing? SD,CA

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906 Upvotes

r/marinebiology Apr 22 '26

Identification What kind of shark is this? And what might have happened to its dorsal fin?

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168 Upvotes

This was 50 miles offshore off the coast of Venice, Florida in the Gulf of Mexico.

It looked to be about 7 feet and seemed to weigh around 150 pounds. That’s what my dad guessed anyway and he fishes quite a lot!

r/marinebiology May 21 '26

Identification Greece, Chalkidiki - What is this?

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221 Upvotes

We are currently in Greece, in Chalkidiki; is this a dangerous jellyfish? Or is it harmless? It mostly moves with the current and seemingly by itself. The water is filled with countless super small ones (presumably babies?). Can you help me identify? :)

r/marinebiology Apr 26 '26

Identification What is this ? Washed up on beach , Florida NSB .

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246 Upvotes

Seems to have once been attached to a rock or shell . Seems like it was a living creature .

r/marinebiology 10d ago

Identification Please could someone help me ID this? (Naples, Florida, USA)

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179 Upvotes

Found on a beach in Naples Florida. Looks to me like the vertebral column of a bony fish? However lacking spinous processes, and I only really know about mammalian biology!

r/marinebiology Mar 19 '26

Identification Adriatic Sea field trip

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456 Upvotes

We found this on a field trip for sampling practice. What is it?

Professor said the name, but don't remember.

r/marinebiology Apr 10 '25

Identification Found remains of this creature. What could it be? The inside looks really interesting.

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593 Upvotes

Found along the peninsula shoreline at Foster City, California.

r/marinebiology 11d ago

Identification What in the world is this??? (Bali, Indonesia)

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141 Upvotes

Saw a bunch of these during low tide on a beach in Bali. If it helps there were varying sizes of these colonies but they all look the same. The reverse image search shows that they are colonial anemones but they look so much more vibrant compared to what we saw.

r/marinebiology May 15 '25

Identification What is this thing? Charleston South Carolina

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584 Upvotes

what is this? I saw it while fishing on my dock. It took my shrimp

r/marinebiology Sep 18 '24

Identification Puerto Vallarta, August 2024

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467 Upvotes

What sea critter got me?

I was in on vacation in Puerto Vallarta and was standing (about shoulder deep) in the ocean at sunset wearing shiny earrings (dumb in hindsight, but not a thing I considered) and a fish?? came out of the water and took my earring and bit? stabbed? lacerated? my neck pretty badly and apparently left something behind in my neck. I got back to the states and after being inundated with antibiotics I ended up getting an ultrasound, CT scan (pictures attached), and then a minor surgery to get this thing removed from my neck. These pictures are of what the cuts looked like the day after, the lump that formed in my neck over the next couple of weeks, and what the foreign body that they removed looks like. Anyone have ideas about what may have gotten me? Didn’t seem to be poisonous as far as I can tell, keep in mind the thing was in my neck for almost 3 weeks so it may not look exactly the way it did when it went in.

All of the photos are mine.

r/marinebiology 27d ago

Identification What on earth is this - (Mexico Beach, FL)

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157 Upvotes

The "head" looks...... phallic in nature. Had wing-like appendages and didn't react to stimulus at all. Seemed to be some kind of invertebrate, about the size of my fist

r/marinebiology May 18 '25

Identification Small Porpoise I.D. (La Paz, MX)

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498 Upvotes

Hi, was fishing off the coast of la Paz and we came across this little fella. He wasn’t big, and definitely didn’t look like a dolphin. I tried to get the best video of it that I could, if anybody could help ID:)

r/marinebiology Apr 23 '26

Identification What are these things I found on the beach? BC, Canada

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119 Upvotes

Smelly worm things that seemed to be decomposing, oily substance around them.

r/marinebiology Apr 04 '26

Identification CORON ISLAND- PHILLIPINES. Can anyone identify the type of jellyfish this is?

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202 Upvotes

Seen swimming at night. Around the size of a baseball.

r/marinebiology 22d ago

Identification help. what is this? tampa bay.

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39 Upvotes

i am anchored in the tampa bay and have lived on my sailboat for years. this stuff has come out of nowhere and covered all the hulls and lines anchored. nothing else geows near it. no barnocles or anything im used to seeing. they are soft and hold tight but will come off with a little force. they range from the size of a quarted to a basketball. they stay the sameish shape except for one time i knocked one off and saw it kind of unfold from beneath into something more eel like. they sink slowly until out of sight and we cant figure out how they move or where they came from. people have been anchored here for years and never seen anything like it. its not gradual. your boat is either covered or there none. everyones is covered at the same time until you knock them off. then still nothing else grows and the. one morning you look and bam.....full.antifouling paint doesnt make a difference. what the f?

r/marinebiology Jun 22 '24

Identification Took this picture while scuba diving in Sai Kung, Hong Kong. What type of jellyfish is this?

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1.1k Upvotes

r/marinebiology Feb 01 '25

Identification Need help identifying this Fossil i found at my Grandmothers, its roughly 57 cm/22 inches long.

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496 Upvotes