i too like beach combing
i pick up all sorts of stuff including garbage
i have a jar of glass, one full of porcelain and one full of fishing lures :)
i kept a few floats from fishing nets when i was on lake superior
i find fossils here mostly as the local rock is sedimentary but the glaciers placed many other rock types on our beaches as well
this one is some kind of coral colony i would guess
on the topic of safety... when i was out in nova scotia.. i wandered out in the bay of fundy looking for rocks following an outgoing tide... at night
and managed to scare myself like i havent been scared in a long time!
it is not to be underestimated or taken lightly
those look like netted pots for hydroponics growing
hydroton balls likely were in the net and the
roots would be sprayed with a
water and fertilizer solution
finding garbage sucks
i have found garbage including hospital waste and syringes on some of the most "remote" beaches on lake ontario
it floats along the surface and ends up everywhere
check out these forums for local resources on fossils and minerals to be found in youre locality
thefossilforum.com
mindat.org
searching for: mindat and the name of a local beach or nearby locality will be easier than navigating the site
check this out too
https://macrostrat.org/map