Hi...the Hobby of collecting things off the beach....is called..."Beachcombing"
A person who collects things can be called a collector. If the collecting is thought to be excessive, such a person might also be called a packrat, or a hoarder.
They are called groins.
A coin collection is called, well, a coin collection. The hobby of collecting coins is called numismatics.
it do be called a bouquet
Things that have to do with a beach are sand, waves, water, shells, beach towel, swim suit, beach chair. and swimmers.
by collecting the right tools and things to make the moai
PHILLUMENY Name of Matchbox Collecting Hobby is Phillumeny
Atlas
A beach made of pebbles is often called a "shingle" beach.
they go to the beach
This can be called a beach, a coast, or a coastline among many other things.
Numismatology