About the Data

Species records include data on invasions history, distribution, ecology, impact, and more. These data were gathered from published literature and targeted surveys. All records have undergone expert review, unless otherwise noted.

View details »

Species Profiles

NEMESIS includes detailed information on about 500 species of marine and estuarine of invertebrates and algae introduced to the United States. Each record contains information on taxonomy, distribution, ecology, and impacts, as well as references.

View details »

Daily Invader

Amphibalanus amphitrite

Amphibalanus amphitrite

The striped acorn barnacle, Amphibalanus amphitrite, was first described by Darwin in 1854. Its native range is difficult to determine because it is part of a complex of similar species and prone to transport on ships' hulls. It may be native throughout the West Pacific and Indian Oceans from Southeastern Africa to Southern China. It has been introduced to the Eastern Pacific (Panama-California), Northwestern Pacific (Korea-Japan-Russia), Southwestern Pacific (including New Zealand and possibly Southern Australia), Pacific Islands (Hawaii), Western Atlantic (Caribbean-Long Island Sound), and Northeastern Atlantic (Germany-England-France).  Amphibalanus amphitrite is a frequent fouling organism and can grow on a wide range of hard surfaces, including docks, ships' hulls, logs, mangroves, rocks and bivalve shells.

Daily Invader for 2023-03-11

Image Credit Melissa Frey, Royal BC Museum
More information