I "think" in the first pic, the item on the far right is some type of fossil or animal vertebrae or something of that sort. Maybe some smart person on this forum knows....I don't know. It's hard and you can see the tiny holes. Whale disc? Too cool to leave behind.
I showed your pic to Grok and it said...
The object on the right is a piece of pumice, a lightweight, highly porous volcanic rock formed when gas-rich lava cools rapidly and traps bubbles, creating its characteristic holes (vesicles). It's often brownish or grayish due to mineral content and weathering.Pumice is commonly found on beaches far from volcanoes because it floats on water and can drift long distances via ocean currents. Your photo shows it alongside seashells on what appears to be a truck bed (likely collected from a beach), with sand/dust around—typical for beachcombing finds.
It's not coral (which is usually whiter, more structured, and from marine skeletons) or sedimentary beachrock/coquina (made of cemented shells/sand, less uniformly bubbly). The irregular vesicles and rough, non-marine texture point strongly to volcanic pumice. If it's unusually light for its size, that confirms it!
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