On a summer day, local fishermen whip their fishing lines off Municipal Wharf No. 2 in Monterey, California, while tourists wander along the wooden pier trying to spot frolicking sea otters in Monterey Bay. Most don’t realize that under the wharf, just below their feet, is a thriving aquaculture operation.Aquaculture is the cultivation of aquatic animals and plants in controlled environments. It’s essentially water-based farming. The Monterey Abalone Company raises abalone, a mollusk cultivated both for its iridescent shell (“mother-of-pearl”) and edible flesh.Trevor Fay, the company’s co-owner, climbs down a ladder from inside his operation’s storefront to a wooden gangway under the pier. The cavernous work area is just about a meter above the glowing green water of the harbor.“Welcome to my office,” Fay announces.Fay points out cages filled with abalone that dangle beneath the wharf. Bee-like swarms of juvenile rockfish congregate around the cages, while barnacles and sea anemones cling to the adjacent pilings.“You see the abundance of sea life here,” Fay says. “It’s an ideal spot.”The Monterey Abalone Company was founded in 1992 by Joe Cavanaugh and Art Seavey to satisfy a growing market for California red abalone—a large, edible species that is a coveted menu item for seafood restaurants. Cavanagh is now retired, and Fay became a partner in 1997.Throughout the 1970s and 1980s, overharvesting and disease led to a decrease in the population of California red abalone. In 1997, a state moratorium on abalone collecting south of San Francisco went into effect. Individuals can collect up to 24 wild abalones a season—north of San Francisco—though they are only allowed to have three abalones in their possession at any one time.Today, abalone farms can help satisfy the public’s appetite for the tasty marine organisms without endangering their population. There are currently 10 abalone farms on the California coast. One advantage of the Monterey Abalone Company’s farm is that its location on the pier makes it very accessible.“It’s a great space for abalone, because we can drive right up to the farm,” Seavey says.Fay says his abalone farm is a sustainable operation that has little effect on the natural environment.“We are growing an indigenous species to the area, and we are using a natural, renewable resource to feed them,” he says.That natural, renewable resource is kelp, a kind of large seaweed. Fay points to a 7-meter (22-foot) skiff docked to the gangway under the pier. It is loaded with 1,361 kilograms (3,000 pounds) of kelp recently harvested from Monterey Bay’s abundant kelp beds. Kelp can grow up to 0.3 meters (1 foot) a day in this area, and Fay says his business only harvests the canopy of the kelp beds while leaving the rest of the seaweed to thrive in the water.On the gangway, a worker in orange waders opens up an abalone cage and begins stuffing pieces of kelp into the wire enclosure. The abalones—a type of large sea snail—cling to fiberglass sheets in the cages and look like little cookies spread out on a baking pan.“It’s important that we have fresh kelp for the abalone,” Fay says.Randy Lovell, the California Department of Fish and Wildlife aquaculture coordinator, confirms that operations like the Monterey Abalone Company are farming in a sustainable way.“Abalone eat very low on the food chain,” he says. “They eat kelp, which is one of the fastest-growing plants on the planet.”According to Lovell, sustainable aquaculture is an appealing way to satiate the public’s appetite for seafood.“The more that we can satisfy the demand for seafood with farm-raised ways, the better,” he says. “As long as it is thought-out.”From Farm to Table, in Four YearsFarming abalone is a long process.The company begins by collecting wild abalones from Timber Cove, California. (Timber Cove is about 161 kilometers (100 miles) north of San Francisco.)HatcheryThe abalones are brought from Timber Cove to the Moss Landing Marine Laboratory, a marine science center associated with the California State University system. There, they become the responsibility of aquaculturist Peter Hain. Hain is a contractor for the Monterey Abalone Company, and previously worked for the Big Island Abalone Company in Kona, Hawaii.Hain agitates the abalones with hydrogen peroxide, which compels the organisms to reproduce. He says he can get as many as 130,000 seedlings from just seven adult abalones.Settlement TanksAfter eight days in the hatchery, the tiny abalones are moved down to settlement tanks, which are nothing more than several white troughs in an undeveloped lot just 30 meters (100 feet) from the Pacific Ocean.Here, Hain pulls a frame out of the seawater-filled tank. The frame holds a number of fiberglass sheets. The sheets are covered in diatoms, a type of algae. Hain identifies the few white spots on the sheets as abalone larvae.Until the abalones are larger than 4 millimeters (0.16 inch), diatoms are their food source.“My job for the next six months is to grow diatoms,” Hain says. “Diatoms grow really well here. I spend more time trying to slow them down!”Once the abalones are large enough, they begin to consume dulse, a red seaweed that resembles a cheerleader’s frilly pom-pom. When the abalones are big enough to be contained in a mesh bag and ready to dine on kelp, they are transferred to the facility under the Monterey Municipal Wharf.Monterey BayThe abalone farm can cultivate close to a quarter of a million abalones. Once the abalones are large enough, they are sold, mostly to local and regional restaurants.“Our biggest market is the Monterey and San Francisco area,” Seavey says.This barely puts a dent in the human appetite for abalone, Fay says.“Demand exceeds production,” he says.Still, farming abalone is a slow process, Seavey admits.“From the day they are born to the smallest size that we sell them, it will take four years,” he says.Shiny ShellsThe color of an abalone’s shell can be influenced by the color of kelp it eats.“If we supplement [the abalone’s diet] with a little red kelp, it causes the red shell color,” says Art Seavey, founder of the Monterey Abalone Company.The Abalone SongSongwriter George Sterling wrote “The Abalone Song” in the early 1900s, when he was a resident of Carmel, California. Get the full lyrics to "The Abalone Song" here. (Note: “Lazaroni” is a mildly derogatory term for homeless Italians.)By Carmel Bay, the people sayWe feed the lazaroniOn Boston beans and fresh sardinesand toothsome abaloneHe hides in caves beneath the wavesHis ancient patrimonyAnd so ‘tis shown that faith aloneReveals the abaloneOh, Mission Point’s a friendly jointWhere every crab's a cronyAnd true and kind you’ll ever findThe faithful abaloneOh, some folks think the Lord is fat,Some think that He is bony;But as for me, I think that heIs like an abalone.
Term Part of Speech Definition Encyclopedic Entry abalone Noun
type of large marine mollusk, related to sea snails.
in large amounts.
relatively easy to approach, use, or obtain.
to shake, or move in an quick, unregulated manner.
algae Plural Noun
(singular: alga) diverse group of aquatic organisms, the largest of which are seaweeds.
physical desire for food.
the art and science of cultivating marine or freshwater life for food and industry.
one of the top layers of a forest, formed by the thick leaves of very tall trees.
to force or cause something to be done.
to desire or wish for.
to encourage the growth of something through work and attention.
to hang loosely.
type of algae, most of which are only one cell.
to bring and secure a ship or boat to a space or facility.
type of coarse, edible red algae (seaweed).
able to be eaten and digested.
conditions that surround and influence an organism or community.
a building or room that serves a specific function.
material made from fine strands of glass that are woven into fabric.
to play or have fun in a light-spirited manner.
part of a body of water deep enough for ships to dock.
Encyclopedic Entry: harbor harvest Noun
the gathering and collection of crops, including both plants and animals.
facility where fish and shellfish are bred, hatched, and nurtured in the early stages of life.
hydrogen peroxide Noun
(H2O2) colorless, oily liquid mostly used as an antiseptic and bleaching solution.
characteristic to or of a specific place.
Encyclopedic Entry: indigenous iridescent Adjective
displaying a wide range of colors that appear to shimmer and change depending on the angle of view or the angle of illumination.
animal that is no longer a baby but has not reached sexual maturity.
type of seaweed.
a new or immature insect or other type of invertebrate.
having to do with the ocean.
large phylum of invertebrate animal, all possessing a mantle with a significant cavity used for breathing and excretion, a radula (except for bivalves), and the structure of the nervous system.
official stop or delay in activity.
to use more of a resource than can be replaced naturally.
platform built from the shore and extending over water.
structure, usually made of metal or wood, hammered vertically into the ground to serve as a foundation or wall.
to satisfy, subdue, or put an end to.
renewable resource Noun
resource that can replenish itself at a similar rate to its use by people.
to fully satisfy or fulfill.
sea anemone Noun
type of marine animal related to corals and jellies.
marine algae. Seaweed can be composed of brown, green, or red algae, as well as "blue-green algae," which is actually bacteria.
small boat able to be operated by one person.
able to be continued at the same rate for a long period of time.
long, narrow, open-topped box usually used to hold food or water for animals.
tall, waterproof boot.
structure built above or alongside a body of water, usually so boats can dock.
This material is based in part upon work supported by the National Science Foundation under Grant No. DRL-1114251. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the National Science Foundation.