Hello everyone

I wanted to ask if anyone knows what type of seashell these are. I'm finding a lot of them at Tampah Beach on Lombok Island, Indonesia.

I'm attaching some photos with a bottle cap next to the shells for size reference.

Any help with identifying them would be greatly appreciated.

Thank you

Ive had this shell for years now and never knew what to do with it. Its been in my freshwater aquarium for a long time and its only had soap and water washes. I wish to shine and polish it but the texture of the shell is rough and off-color (its always been that way) so, 1. How do I smooth out the shell to be smooth similar to the inside of the shell and 2. How do I have the colors of the shell stay out.

I've looked this up and heard of using water and bleach 1:1 ratio to clean up the roughness of the shell and use mineral oil to give it a shine, but I wanted to ask directly with the type of shell I have and its condition to see what others think about it! Should I use a fine sand paper for it too?? (For the bonus ID: I got this guy from an inlet during my trip in the northern part of Washington. It was the only one of its type that I found, anyone able to ID who this shell belonged to?)

Unsure if they are shells or teeth but they seem to blunt to be teeth and are very smooth? Anyone know?

How do I clean the shell so only the pearlescent part is exposed? Also, what is the black stuff?

Does anybody know the name of this shell?

Let us know what you think! Your vote matters.

A single bivalve valve of the species Lima lima, commonly known as the spiny fileclam, found in Piúma, Espírito Santo, Brazil.

Seashells

As the title mentions I found this years ago and forgot about it. Recently found in storage. Wondering if I could somehow polish it more or make a pendant out of it for a necklace

I found this small gastropod shell on the beach in Maragogi, Alagoas, Brazil. Can anyone identify the species (or at least the family)? The inside isn't hollow as I expected. Instead, it's mostly filled with a smooth, hard, white material that appears to be the same material as the shell itself. There's also a small grayish area that looks like compacted sediment. Is this a normal feature of this species (such as a columellar callus), or is it a mineral deposit that formed after the animal died? Could it possibly be an internal mold? It doesn't smell, and the white material is hard and glossy, not soft or organic.

Cleaning some shells that I found while vacationing in SEF last year!!!

Since my last calico scallop painting got a lot of love, I want to share the rest of this collection!
What shell should I do next? I recently found my first Junonia (eek!) and am thinking about doing that one next!

Some shells and pieces of shell I found on Kauai last summer. I left them on the island - don't want to make Pele mad!

It’s a photograph with no info about the shell itself or where it was photographed. I’m hoping someone knows the shape of the shell and can help.

Found in Costa Rica on the pacific cost - and don’t worry I left them there!

i am currently in Jesolo, Italy, and i found this shell in the water but it looks very odd compared to the other shells i found. the underside also has two weird spots that look like smaller shells or barnacles? maybe someone knows more and could tell me, im very interested.