My wife and I laugh at the vacationers in the winter. We go out to Gulf Shore Beach, Lighthouse Beach or Bowman's Beach on Sanibel. It's usually after a cold front goes through which only happens about 5 to 10 times in the winter and never the rest of the year. The cold front brings a strong northwest wind and washes way more stuff up on the beach than any other time of the year! And we like to go at low tide in the morning, before too many shell collectors pick over everything and the low tide has left more stuff on the beach. So it's COLD, at least cold for us with temps in the 40's. So we have on layers of clothes and jackets and wool ski caps. But the vacationers are only there for a week or two and want as much beach time as they can get. And right after a cold front, the sky is clear blue and it looks wonderful, so they are out walking the beach or hunting for shells wearing shorts and t-shirts or bathing suits! But if you are on vacation from North Dakota, 40+ degrees in the middle of winter is a really nice day!
I found these anemones along Gulf Shore Beach. They were just laying in the damp sand a bit above the highest point the waves were washing up to. And the tide was going out, so they were stranded and destined to die. I probably set another dozen of them back into the water in hopes that they might survive. But I know that is very unlikely.
While doing beach walks we have found lots of different mollusks like Florida Fighting Conch, Horse Conch, Olives snails, Lightning Whelks and more. We find several different kinds of anemones, a couple different kinds of sea cucumbers, a couple different kinds of stars, lots of sand dollars, sometimes urchins, occasionally a purple gorgonian coral and some other odds and ends. Almost all of these guys we find on the beach end up getting put back in the water. We have saved a few small octopus and once I even saved a 2' sharpnose shark that was stranded at the edge of the water!
Now the other thing we do is collect porcelain crabs and pistol shrimp that we save from sponges that have washed up on the beach. There is a soft orange sponge that very often will have a number of porcelain crabs as well as very small stone crabs and blue crabs which are carnivores and we don't keep because they will eat our snails and hermit crabs. There are less pistol shrimp, but on really good days, after a good strong cold front, I might get a a few. These sponges are also nurseries for baby serpent and brittle stars. But the stars are much more dependant on being in the water and do not survive long even in a sponge that has washed up on the beach. If we find a very wet sponge at or just in the water, it's possible to find live stars. On Sanibel and Captiva they are illegal to collect. On Ft Myers Beach and Lovers Key they are legal to collect. You need to know the local laws.
This is me very early one morning wearing apart a sponge. I have a 6g bucket with a battery powered bubbler to keep everything alive.
Here is a close shot of a sponge being pulled apart. This sponge had 8 to 10 porcelain crabs and several small serpent stars.
Here is a view of the beach on a really good collecting day after a
strong cold front. And we are lucky if this kind of day happens once or twice a year.
Here is a shot of my 'collection' from a particularly good morning this last January.
A Hitchhiker anemone that like to attach itself to the back of a big crab.
A couple of porcelain crabs and a pistol shrimp on a sea cucumber.
A green pistol shrimp
I didn't know what this even was when I collected it. It was one of many on an exposed sandbar. It turns out to be a filter feeding sea cucumber with a couple of yellow pistol shrimp hanging on to it! The shrimp weren't found with the cucumber, they came from inside sponges. I didn't even know they were native to Florida! It's been in my tanks for 7 months now and is still doing just fine.
A red porcelain crab on the sea cucumber.
A yellow pistol shrimp.