Beach-combing Again in Florida

shells found at beach
Sea Treasures

As a celebration of my moving back to Florida recently, we went to the beach yesterday! How sweet is was to float in the warm ocean water again. And of course I had to search for seashells. The central east coast is not known for it’s abundance of seashells, but I did find a few to take home with me.

After the move, from the northeast to the south, most of my things are in storage – including my old seashell collection. That means I have to begin a new one! So here I go – beginning with a piece of a large sand dollar and a shiny Sawtooth pen shell.

I also found many arks, which are able to survive the rough surf because of their thick shells. In fact I think the ark is the most often found bivalve on the east coast beach I visit. Everything I found yesterday was a bivalve (shells with two halves), with the exception of the piece of sand dollar.

Now that I am able to go out and collect seashells much more frequently, I will study them closer and try to determine exactly what I have. Many types of shells look very similar, yet have different names.

Today I learned that the Incongruous ark (Anadara brasiliana) can be recognized by the dashes that appear across each section of their ribs.

Incongruous ark shells
Incongruous ark shells

As you can see (hopefully) in my photo above, the ribs running along the shell are not smooth, but bumpy.

To identify seashells, sometimes a close inspection is needed. At first glance, most of the shells I found looked all the same. A good identification book will show pictures from the top and bottom of the shell and give a description about how to tell shells apart.

It helps to know seashell identification terminology too. Words like “umbo”, “teeth”, “apex” and other anatomy of a mollusk.

By the way, I managed to find a couple of Common jingle shells yesterday also! That was exciting.

Sea Biscuits On Sanibel Island?

Sea biscuit sand dollar
Large Sea Biscuit

I recently had a reader ask me if the treasure she found along the beaches of Sanibel, Florida was a Sea Biscuit. I have a couple of sea biscuits, which are puffy sand dollars, but I didn’t find my large one, I bought it at a shop years ago. I may have found the small one, but don’t remember.

Anyway I really don’t know much about the sea biscuit so I checked with my favorite shell blogger, Pam at the “i love shelling” blog and she had one page, with lots of cool photos, of many things, but no sea biscuits. Pam lives there and goes shelling most every day (how lucky is that?) and she also mentions that she hasn’t found any Sea Biscuits on Sanibel. According to her they are found in the upper Florida Keys.

She does have photos of “potato” or “heart” urchins on the beach.
You can visit that page here.

Do you have any info to add about the Sea Biscuit sand dollar? Leave a comment to help us out please!

For more on Sand Dollars:
The Sand Dollar

Visit Pam’s wonderful blog about shelling on Sanibel Island:
i love shelling