But they’re actually not trash at all — they’re moon snail egg casings, and they play an important role in ocean ecosystems. Moon snails are large, sea-dwelling mollusks found all over the ...
"Not garbage! Not an alien!" the Seaside Aquarium posted on Facebook recently. "It's a giant marine snail egg casing!" Fully grown, the Lewis' moon snail can grow up to 5.5 inches. The Washington ...