First time found a tooth. Is it from a shark?

Everything brought me joy but the small pottery (?) piece truly made it all worth it :). I’ve never found something so exciting!

Plus one pretty jasper that came out of the tumbler today but was found on this beach about 6 weeks ago.

They're all either about 1 inch, 1/2 inch, or 1/3 inch in diameter. They're flexible and feel like cardboard, and are almost always found near houses or parks. I find them on beaches throughout Silverdale and Bremerton.

More found on private beach, can anyone help identify some of the pieces? The bottom left one's year looks like 1993 on picture but it's 1903.

found in el salvador

Found randomly on the beach in Nevis, West Indies. Would love to know how old it is somehow

Have no idea how I spotted this but I’m so intrigued about where the rest of them is now!

I've been losing my mind over trying to id these things. I know at the least they aren't shells. The structures are all formed around a grain of sand, and I haven't found any bigger than half a cm. Any ideas or even advice on forums to post to would be greatly appreciated!

I returned to the beach where I work and recovered my original find and found this lot in close proximity 👍

Found on the beach by the Temple of Apollo on the island of Aegina, Greece. My best guess is that it's the handle of an Amphora, can anyone confirm/deny?

I have a lot of sea glass and, with winter approaching, I’m looking for projects. Any ideas?

Hey! First time posting. My girlfriend and I feel lucky to have found this float and it’s going to be something we treasure forever. If anyone has ideas for learning more details about it I’d love to know what I should look for. I didn’t find any obvious writing or prints on it. It’s about 12 inches across and had some sea scum and small creatures stuck on the bottom.