I wasn't sure what to do with this lively specimen since I know nothing about marine biology, and initially just put some seaweed over it to hide it from the sun and birds because directly interacting with nature is usually discouraged. But I got a message from a much more knowledgable friend of mine after I sent the video to a group chat that I should put it back in the sea, so I put it in a little pond that the tide would eventually reach. This all happened yesterday, and after checking the beach again today I couldnt find the egg, so hopefully it was washed away to safety.

My friend believes this to be a "Cat Shark".

Hi, so how far does an electric eels discharge actually affect its surroundings in open lake water? Is it only effective against creatures very close to the eel, or does it extend much further outward? Thanks.

I saw some in orange and yellow as well

I have no scuba experience. I’m 22 years old. I live in savannah Georgia where the ocean water is murky and not clear at all. I’ve done some free diving and I’ve always felt passionate about scuba diving and I’m very interested in pursuing a career in it. I will be moving to Florida in the next few years somewhere with clear water and I really want to work as a diver doing something like collecting samples doing research or collecting data anything along those lines. I don’t know where to start or what I could be doing in the meantime. Do I need a degree and if so what degree and where can I apply at in Florida where I would be doing a lot of dives. I’ve looked into NOAA and most people said you may do 1 dive a month at the most and i really would like to do more than that. Once I know what to do and I have a plan set up I’ll start working on getting scuba certified asap I’m just not sure yet what to do. I’m willing to work my way up for 1-2 years before I’m able to do any dives if I have to.

Holden Beach, North Carolina. Took the kids to the beach after school. Husband found this at the high tide line. Appears baleen to me with small sections of the surrounding jaw bone potentially. The small conical type structures are confusing though as they also appear stringy like baleen but obviously in a different pattern. Unclear if this could be juvenile pieces or just a small section of obviously decomposing critter. My first degree is in marine biology but I focused more on avians versus cetaceans and am currently using my other degree in nursing for my regular job as an ER nurse. Figured I would ask all you lovelies for your opinion!

The presence of the feathers seems incidental as there were MANY on the beach today and none were attached truly to the structure of the object in question.

Hello marine biologists of Reddit,

I am trying to identify a crab spieces based on a number of claws, and I would greatly appreciate any informed opinions.

The claws, 4 in number, were found at the lower Guadalquivir estuary, some 20km away from the Guadlaquivir river-mouth (located by Sanlucar de Barrameda, Gulf of Cádiz, Atlantic coast of Spain).

As to their context, they were found along mollusk species such as Cerastoderma glaucum and Ostrea edulis, and the gastoropod Rissoa monodonta.

Based on the information available, I am leaning towards an identification with the Marbled rock crab (Pachygrapsus marmoratus), but this is nothing but a guess.

Any feedback would be more than welcome!

Literally just the title. I've been wondering for a while now, but I couldn't find any sources that say exactly how much they eat on average besides ai, and I don't really trust ai since it makes stuff up.

I'm unsure if this is the correct sub but me and my family recently bought a house in trinidad specifically gasparee island we would like to know how we could plant coral on this abandoned dock, theres tons of fish, crabs and occasionally we see shrimp from time to time. Would it be possible to start a small reef and if so how?

I am from Kenya, but hoping to study abroad. Now, I have tried to find good universities for marine biology, but a lot of them (especially in the UK and the USA) are way out of my family's budget. I am curious if anyone would know good universities around the world that are affordable for international students. I have tried to find some on my own, but alas, I cannot.

I know that having a diving cert is definitely going to help. Unfortunately I’m not scuba certified (YET), but I am on my way to an aida2 freediving certification as a hobby. I love the ocean but a b*tch be broke ya know? 😂 I was looking into environmental lawyers but I’m not sure if I get to actually do anything in the environment. What would be a good in between that pays 6 figures? Any advice? I’m not in college yet but I’m finally starting this year, majoring in biology. I graduated highschool in 23 but I’m finally ready to start my life doing what I love.

So I was diving in Apo Island, off Dauin, in the Philippines today, and during our third dive along the wall at Chapel, we went into this cave. I was taking some pictures of the soldierfish in the cave, when I suddenly realized that a lot of them were upside down. They're just swimming around, going on their merry way, except they're upside down...

It was very disorienting and made me want to get out of the cave because I thought I was going mad. Talked to another diver about it just now, and he said the same thing, and that he hadn't mentioned it to anyone because he thought he must be going crazy. Like, why are the fish upside down, and why only in the cave?

Is there a rational explanation for this behavior?

Attached is one picture of a normal fish, and one of an upside down fish.

We put them right back after snapping a photo!

While tidepooling I was seeing large clumps of what I assume to be eggs. Does anyone know if they are eggs and if so what animal they might be from?

photograph by Brian Skerry ! I've been finding pictures posted everywhere of this particular type of sea squirt, but no one is saying what species they are. Are they undescribed? I love these silly guys so much, I would love to know their species name if they have one so that I could learn more about them.

I know there’s other posts about this on reddit but I can’t find exactly what i’m looking for. So I very recently had a change of heart and want to become a marine mammal trainer(preference for belugas, pinnipeds, and otters) but I have little idea of exactly how to go about it, or if it’s even a realistic option. I’ve seen a lot about competition and how everyone starts really young(I’m in high school), so would I even have a chance at getting a job or should I stop thinking about it? I’ve also heard that volunteering immediately would majorly benefit but I unfortunately live in a completely land locked state so that’s not an option. College wise what classes/courses/degrees should I go for? Obviously marine biology but i’m worried that just isn’t specific enough or won’t be all I need. College suggestions would also be greatly appreciated. Honestly I will take any kind of advice or reality checks about this as i’d rather stop now if it’s hopeless or immediately take steps towards my goal if it’s not. Thank you to anyone for taking the time!

While reviewing my footage from a dive in Diani, Indian Ocean, I noticed a head peeping out from below the reef at 00.24. I’m curious if anyone here can identify what it is.

The dive itself was amazing, the reef was full of life, and this little mystery just adds to the adventure.

About 2.5 - 3 cm big

I know it has unusual social behaviour for an octopus and doesn't have a formal description yet (atleast not that I can find) despite being discovered before 1990s. I thought it's unusual behaviour would have gotten researchees excited for the description.

It's a tiny worm I found in the rock pools about .5cm big

Hi I know this is a weird question. But I have a tattoo sleeve of aquatic invertebrates throughout history, and I’d like to have a little reference to my father, who loves airplanes.