- It has a relatively smooth oval-shaped shell, with five to nine holes used to breathe, remove waste, and reproduce
- Relatively small compared with most of the other abalone species
- The coloration is dark brown, dark green, dark blue or almost black
- Black-colored body (foot and tentacles) that can be seen around the edge of the shell
- Can grow up to 8 inches
- From Mendocino County, California to Cabo San Lucas, Baja California, Mexico
- Low intertidal zone, rocky substrates
- Up to 20 feet deep
- Typically found wedged into crevices, cracks, and holes during low tide
- Drift algae, kelp, giant kelp, feather boa kelp, bull kelp
- Eggs and larvae eaten by filter-feeders
- Juveniles and adults eaten by crabs, lobsters, octopuses, sea stars, fish, sea otters, and predatory snails
- Humans have harvested black abalones along the California Coast for at least 10,000 years.
- This used to be the most abundant large marine mollusk on the west coast of North America, numbering in the millions, but now, because of overfishing and the Withering Syndrome, it has much declined in population and the IUCN Red List has classed the black abalone as Critically Endangered.
- Fishing for black abalone has been illegal in California since 1993, but they are still often caught by poachers
Sources: IUCN Red List; NOAA Fisheries; World Register of Marine Species; FishTech.com; UC Santa Cruz
Photo: Laurel Bartels
NOAA’s Southwest Fisheries Science Center here in La Jolla is researching abalone and how to help them recover.