These are moon snail egg cases, not pieces of rubber that someone littered. Moon snails use sand and mucus to make the pliable cases. The eggs hang out in the case for a couple of months, then break free and become free-swimming larvae for a while before they settle down and become fully-realized moon snails. We know some humans who've followed a similar trajectory.
[…] Oyster fan was skeptical, too. How could a snail so clumsy bury itself so adeptly? But Adam deftly excavated the snail with his oyster knife: and exposed the sneaky snail. Another clue that there are many more moon snails on the beach than first meets the eye: the beach is absolutely littered with moon snail egg carcases: […]
[…] Oyster fan was skeptical, too. How could a snail so clumsy bury itself so adeptly? But Adam deftly excavated the snail with his oyster knife: and exposed the sneaky snail. Another clue that there are many more moon snails on the beach than first meets the eye: the beach is absolutely littered with moon snail egg carcases: […]