6 full lessons
Written in plain language, illustrated, and kept as a reference afterward.
Systems · where the seed comes from
Hatchery and Nursery Operations
Broodstock, spawning, larvae, algae, setting, and nursery grow-out, plus the water chemistry and record keeping that decide whether a run succeeds.
Six lessons on making young animals: what a hatchery does and why seed supply is the industry's quiet bottleneck, broodstock conditioning and keeping family lines straight, the daily rhythm of a larval tank, growing the live algae that feed it, setting and the nursery upweller, and the incoming water chemistry that West Coast hatcheries learned to measure the hard way.
$125 once, or $125 on Driftline. Add $60 and Jules reads and grades one real piece of work, passing at 80 percent. Review is optional. Nothing here is accredited or carries credit.
Take this class
Pay once, and it is yours to come back to. Pick how you want to take it.
On your own
The whole class, the practice work, and the knowledge checks. No pass score, no graded work, no certificate gate.
With Jules reading your work
Everything above, plus one real piece of work, "One cohort, from spawn to transfer", that Jules reads and grades against a rubric you can see before you start. You pass at 80 percent, and you can rewrite and send it back as many times as you need. This is optional, and it is not accredited and carries no continuing education credit.
Already taking this class? You can add review later and pay only the $60 difference.
10.5 contact hours
Measured per lesson, with written outcomes, so your time is recorded honestly.
No-pressure checks
Clear answers and explanations, unlimited tries, and nothing sent to a gradebook.
Region aware
Rules are shown by state with the source and the date we checked it.
The complete course
Lesson 1 · 1.5 h
What a Hatchery Actually Does
- · Describe the stages between broodstock and a farm-ready juvenile
- · Explain why concentrated seed supply is a risk for a whole region
- · Use hatchery, nursery, and grow-out correctly in conversation
Lesson 2 · 2 h
Broodstock and Spawning
- · Explain what conditioning does and why it takes weeks
- · Compare common spawning approaches and when each is used
- · Describe why genetic diversity is tracked and how it is lost
Lesson 3 · 2 h
Larval Rearing, Day by Day
- · Describe the daily routine of a larval rearing tank
- · Explain how larvae are counted, sized, and graded
- · Recognize the early signs of a failing run from records rather than instinct
Lesson 4 · 2 h
Algae and Feeding
- · Explain why live algae are cultured on site and how a culture is kept clean
- · Describe the scale-up from a small starter culture to production volume
- · Write a contingency for a culture crash
Lesson 5 · 1.5 h
Setting and the Nursery
- · Describe settlement and what triggers it
- · Compare cultch and cultchless seed and the farms each suits
- · Explain how a nursery upweller works and what it demands
Lesson 6 · 1.5 h
Water Chemistry, Failures, and Records
- · Explain in plain words why incoming water chemistry affects shellfish larvae
- · Describe common incoming water treatment steps and their purpose
- · Keep the records that make a failed run diagnosable rather than mysterious
What this course covers where you live
We say plainly how well each part of the country is covered, rather than implying the whole country is written to the same depth.
- West Coast: sourced and ready
- Alaska: partly sourced
- Northeast: partly sourced
- Mid-Atlantic and Southeast: partly sourced
- Gulf: partly sourced
- Great Lakes and inland: partly sourced
- Hawaii and the Pacific islands: partly sourced
Changing ocean chemistry is a working problem on this coast
Pacific Northwest shellfish hatcheries experienced larval failures linked to corrosive upwelled water, and responded with monitoring and buffering of incoming water. It is the clearest example anywhere of a farm adapting to ocean chemistry in real time.
NOAA Ocean Acidification Program · checked 2026-09-19Seed movement is regulated
Bringing seed or broodstock across state lines involves state shellfish and fish health requirements, health certification, and in some cases approved source lists. Check before you order.
USDA APHIS, aquaculture animal health · checked 2026-09-19Hatchery research is published openly
Land-grant programs, sea grant programs, and federal research services publish hatchery methods and results freely. Reading them first is cheaper than repeating an experiment somebody already ran.
USDA Agricultural Research Service · checked 2026-09-19Shellfish sanitation rules still apply to a hatchery
Water classification, records, and the national shellfish sanitation framework reach hatcheries and nurseries too, not only harvest. Your state shellfish authority is the source for what applies to you.
FDA, National Shellfish Sanitation Program · checked 2026-09-19
If you want Jules to read your work
Everyone gets the same lessons, practice work, and knowledge checks. For $60 more you also get one real assignment that Jules reads and grades. You can see exactly how it is judged before you start, you pass at 80 percent, and you can rewrite and send it back as many times as you need. This is optional, and it is still not accredited and carries no continuing education credit.
The assignment
One cohort, from spawn to transfer
Plan a hatchery run and say where it usually goes wrong.
Plan one cohort for a species of your choice, from conditioning or spawning through to transfer out of the nursery. Give the stages, the rough timeline, the water and feed conditions at each stage, and the records kept. Then write the three most likely ways this run fails, the first warning sign of each, and the response. Cite your sources for timings and conditions.
How it is graded
Stages and timeline realistic · 25 points
The sequence and the rough durations match published practice for that species.
Conditions specific and sourced · 25 points
Temperature, salinity, density, and feed are numbers with sources, not general guidance.
Failure modes named honestly · 25 points
The three failures are the ones that really happen, not the easiest to write about.
Records support the response · 25 points
The records you keep would actually catch the warning signs you named.
100 points in total. You pass at 80. Jules grades what you worked out, not your formatting or your word count.
Where it can take you
Hatchery skill is built alongside someone experienced. Use this to understand the whole cycle, then look for a season of work, a college program, or a research hatchery placement.
This course does not carry accreditation, credit, or continuing education units, and completing it does not count toward any outside credential. It is written to the structure a continuing education standard expects, with measured hours, written outcomes, and a completion record you can keep.