Horse tooth (likely). Include a photo of the masticatory surface.

horse tooth, I think, but you need to photo the chewing surface as well as the side view

Looks like a piece of bone

try to include several views of unidentified specimens. This looks like it may be a piece of vertebrae, but more views are necessary.

photo lacks definition to tell what it is. From the thumbnail I thought it might be a gar tooth or small crock tooth, but enlarged I can’t distinguish enough to suggest much.

Both of these look like trace fossils called steinkerns bivalve castings.

End cap of a small vertebra from a juvenile dolphin

Hard to tell without more viewing angles

need to include a side view photo. Possibly more steinkerns (small clam casts)

this is a worn whale bulla

this looks to be a nice section of dugong rib and that is likely what the two specimens prior to this are as well

my guess- turtle

soft shell turtle, nice example

probably more turtle shell- not sure the type

Soft turtle shell

These are shark vertebral disks