I find tools like that all the time on woodland site near the beach. Limited materials in parts of FL, they used every little bit of it. Score bone, scrape whatever!
The big one was used more that one edge is completely worked. It could just be one good edge of a broken scraper...... but even the little projections have a few flakes taken off, hard for nature to do that. I'd prefer to hold it in my hand with my readers on boom.