Over the past two decades, the Gulf of Maine has become a popular landing spot for invasive species from across the world, says Geoffrey Trussell, an evolutionary biologist and professor at ...

Two common snail species (Nucella lapillus and Littorina obtusata) have evolved in response to a major predator: the invasive ...

South Sea pearl-shells are common ... which shells are known in commerce as flat-shells, green snail-shells, buffalo-shells, Bombay shells. Messrs. Faunt-leroy and Mr. Banks had also some fine ...

The green turtle is a large, weighty sea turtle with a wide, smooth carapace, or shell. It inhabits tropical and subtropical coastal waters around the world and has been observed clambering onto ...