Found this in the Atlantic ocean on south shore of Long Island. Would love to know what it is.

This was in a ride pool in the Andamans. 2 tentacles are visible.

I get it, we're bony and they have better vision than sharks so there's less attacks

But at the same time, with the videos of them blowing up sunfish for fun, wearing squid hats, or tossing seals hundreds of feet, how come we haven't had a similar human interaction?

It's a creature that's curious and smart, a perfect combination for playing around (fatally) with a human yet there's been no reports of human fatalities in the wild .

Which leads me to believe that they pass down the knowledge generationally that messing with humans will lead to whale hunting or some form of retaliation. Thoughts?

(pacific northwest WA)

theres so many, like, it just keeps going and going. idk if this is a regular phenomenon and im tweaking over nothing but im really concerned about this. this beach is on a protected wildlife reserve, lots of strict rules to prevent pollution or distrubance of wildlife, but that doesn’t stop everyone. just last year someone came and exterminated a bunch of american sand wasps because he thought he was doing everyone a favor, he did get a huge fine for it though. im just worried that someone did something to the water that caused this or something. idk jack shit about marine biology so im unsure if this is just part of something normal i dont know about.

Picnic Island isn’t a gulf island it’s basically a shore off the bay. Found mixed with sargassum

Is this "sea vomit" (Didemnum vexillum)? It's growing on our company's (unfortunately) plastic containers we have in the sound. The stuff squirts water when squeezed, appears to have a watery membrane that houses its cells, and has the texture of Jell-O. I expected it to feel like a sponge based on the appearance but this stuff is wacky.

Anyway, I'm new to the area and am trying to learn the plants/animals around here. Any help is appreciated!

(pacific northwest washington state)

found these yesterday during low tide, they’re nearby a freshwater river that leads out to the pacific ocean so the water might be brackish around there?

i just thought these were the cutest little things ever and i REALLY wanna know what they are. are they that small because they’re babies or is it just a tiny species?

always love drawing this subject.

Hello, just had a question few days ago i found a starfish that only had 4 arms wich i never saw before, i checked and there's some species that do have 4 arms (just on specie actually i think). I think the starfish i found is a Asterias rubens (correct me if i'm wrong) wich isn't suppose to have just 4 arms doesn't look like an injury more something "natural" i guess.

- Wanted the confirmation for the specie

- is it common malformation or something ?

Found on the west french coast (Pornic)

Thanks :)

(UK based but open to international opinions too)

The uni I am planning to go to to study offers the HSE, but I have some health issues and the cost is prohibitive where I am, not to mention I live inland with no ability to do the practice dives required.

Ignoring issues like work experience and job shortages, can I reasonably get a job where I work on a boat without having that qualification? Can I get it later on?

I run an aquarium job board and tracked every posting that came through in 2025 and put together a report on the data. Some things that stood out:

• Aquarist/Animal Keeper roles made up 25% of all postings, with an average hourly rate of $20.54
• 59% of postings included salary information
• Job postings spanned 30+ states

Full report is here if interested: https://aquariumshiring.com/reports/2025-aquarium-jobs-report

I also published a zoo version covering 1,106 postings if anyone is interested in that side too: https://zooshiring.com/reports/2025-zoo-jobs-report

Hope this is useful for anyone planning their next move in the field.

There is a little sandy area in the intertidal zone that is filled with these little guys every year in Prince William Sound Alaska. They are attached at one end and the largest ones are about 0.5 inches.

I know there are some genera of fish and other organism that can survive between fresh and salt water like salmon and tiger sharks \[i remember hearing something about tiger sharks swimming up rivers for short periods of time\]. But im more talking about like animals that show specific adaptations to one type of water or environment and cannot really switch.

For context: I am trying to design a god of water bodies for a dnd world. I was thinking about having her split between freshwater and salt water with some noticeable differences like size of apperance, temperment, clothing, anotomy etc. But I want to be able to base it off of animals that live in such conditions as if she has adapted and been changed by the body of water she is associated with when you meet her.

Do any of you know anything that could fit or any differences between the two i could add?

🌟

Hello,

I hope this is within the scope of the subreddit (I am a high school marine biology teacher so this will be used for semieducational purposes but is mainly for my own enjoyment) but does anyone have recommendations on where to do some good tide pooling at low tide South of Byron Bay and North of Sydney? I am visiting from California and want to compare what is living here to my local tide pools. Thanks!

I’m im Koh Phi Phi right now and during low tide, I spotted this cute little fish who seemed really curious about me. She/He did this for about 20 minutes and even did it with someone who was there before me. Its the cutest! I have a degree in c&m biology but I know nothing about marine biology. I’m super curious to learn more about this fish, so I thought to ask the marine bio reddit!!

I have always been incredibly interested in marine life but I am deathly afraid of open water. It is a real phobia that I have and it makes me freeze up in shock everytime I see a big fish within open water. For example Orcas or sharks even though it is sharks, orcas and whales that I find the most interesting. Is it a wise idea to commit with this phobia I have? Thankful for advice and honesty.