Viable

able to germinate (as a seed) or hatch (as an egg) (C2)

Tramp species

any species (such as an ant) that is well-adapted to living in close association with humans and easily dispersed around the world as humans ship goods and travel from one place to another (A4, C4)

Succulent

having fleshy tissues designed to conserve moisture (A3, C2)

Sources

contributors to the materials found on a beach, such as coral skeletons, eroded rocks (C1)

Sinks

places where beach sediments are stored/taken away from a beach, such as offshore (C1)

Shoreline armoring

structures such as seawalls, revetments, and groins designed to slow coastal erosion (C1)