Harmful algal blooms · Organic toxins
A bloom does not wait for a procurement cycle. HABslayer is a treatment plant that travels, subscribed to by the year and already on your water in the weeks when a decision still changes the outcome.
The argument
The fix is upstream. Cut the nutrient load, mend the catchment, hold the fertilizer and the sewage back from the river, and blooms get rarer. That is the right long fight.
It is also the slowest lever. Twenty years of the Baltic Sea Action Plan brought nitrogen input down 11 percent and phosphorus down 32 percent against the 1997–2003 reference period, across nine sovereign borders — and the hypoxic area went from under 10,000 square kilometers before 1950 to more than 60,000 since 2000. Real reductions. Worse water.
Meanwhile the bloom arrives at an intake in July, closes the beach, throttles the plant, takes the pen stock and empties the hotel, all inside a fortnight on a coastline that has to keep trading.
HABslayer is built for that fortnight and bought for all the weeks around it. It replaces none of the upstream work. It keeps the season, the harvest and the water supply intact while that work is legislated, funded and built.
Two modes, one hull
Cell counts are up and the water has changed color. Hulls take station on the patch, draw from the depth it sits at, run that water through the reactor and hand it straight back to the piece of bay it came off. Then they move, because the patch moves.
It maps onto an emergency every operator already has a name for.
Imagery and sampling flag a patch forming on water nobody holds a contract for. A vessel works it where it sits, while it is still small and shallow and nobody has written a press line about it. Sometimes that is around the headland. Sometimes it is offshore, on a feature that built in open water and has not yet chosen a coastline.
Deep Strikes sit inside the base Aquatic Prosperity subscription, because the bloom that never arrives is the cheapest one to treat. How much forming water a program keeps under treatment depends on how many hulls it carries, and the hulls go where the avoided loss is largest.
Where incidents are genuinely rare, per-incident work can be sensible. It is not offered. The fleet is built to hold a condition all year.
How it is sold instead
You buy an outcome in your own water on a running subscription, delivered by a licensed service operator. Nothing is sold or rented: no hull changes hands, no machine hours are billed, no fortnight in July is booked, and the gases and augments stay with the operator. An intercepted bloom and a full-blown one cost you the same.
A subscription can be canceled at any time for failure to hold the agreed parameters. After the minimum subscription period it can simply not be renewed, for any reason or none.
HABslayer belongs to Sophia Delta, which licenses it and signs no service contract. The counterparty is whichever operating company holds that license for your water; today that is Alarivean, Inc.
The stage itself
Bloom water is drawn into a reactor inside the hull, worked as it moves through, and discharged inside the specification written for that site — into the same water it left, read where it leaves, with an outside verifier on the same reading.
Cells are broken and their toxin destroyed inside that reactor, where instruments can watch it happen. A hull of this class is specified near 5,000 gallons a minute. Nothing is stored aboard and nothing is hauled off. Everything goes back carrying more oxygen than it arrived with.
In the schedule
A fisheries directorate, an environment ministry and a water utility each get these four in writing, in roughly this form.
Who calls, and why
On a coast that drinks what it desalinates, the water behind the screens is a city's drinking water, and a bloom never has to reach a beach to reach it. Israel Oceanographic and Limnological Research, the national marine research institute, recorded that its earliest samples of the intense bloom first identified in Israeli Mediterranean waters on 30 August 2026 came from the country's desalination plants. The plants were the detection instrument. As of 9 September it recorded neither improvement nor decline, in an account it labels preliminary.
Membrane biofouling, throttled output, and a public conservation notice nobody wants to issue twice.
A year of feed conversion floating on the surface after one bad night. Mortality is the loss class, and a bloom writes it in hours.
Respiratory complaints on the sand, canceled bookings, and a season priced before the bloom arrived.
Shellfish closures that hold long after the water clears, because the toxin does not leave with the cells.
On the record
A permit number and an agency release can be checked in an afternoon.
In 2018 NOAA's coastal science centers put an ozone nanobubble aeration system into an eight-acre Florida pond and recorded the algae gone inside two days, reoxygenation holding, no apparent harm to the life in it. The equipment and partners were not Alarivean's. It shows the approach clears what it is aimed at.
Florida DEP issued Alarivean, Inc. permit FLOA00062 in September 2024 to field-test an ozonated-seawater craft against red tide, on a five-year window gated on live Karenia brevis above 100,000 cells per liter. The Sarasota Bay Estuary Program and the Florida nonprofit START each documented it on their own sites. A regulator with jurisdiction allowed a bounded trial.
Nobody has published an open-water result for this class of treatment, this group included. Sarasota backed the application on technical grounds and took none of the company's money, so it is free to publish whatever the bay does, and it wants to hold the instruments when the open-water measurement is taken. That measurement is what a calibration phase on your own water produces, against parameters agreed in writing before a hull moves.
The third document nobody can open. Alarivean completed the term of a Cooperative Research and Development Agreement with NOAA, entered through AMURI, and work under it with Dr Peter Moeller established that this treatment neutralizes toxins by breaking the part of the molecule that makes them toxic, leaving nothing to settle out or skim off. That term is over and nothing has replaced it. CRADAs are private commercial instruments, never filed publicly, so a search returns nothing and always will; the finding rests on the company's own account. A research agreement is not an endorsement, and no federal agency endorses commercial products.
Dr Moeller still advises and still checks the research. The original agreement was written around a single nanobubble generator since retired from the program, and the work after it moved to Arizona State University, the Middle East Desalination Research Center and more — facilities that fit the scale being tested next.
Elsewhere in the system family
Immediate, Significant, Scaled
Name the bay, the species if you have it, the weeks it comes back in, and what last year's bad fortnight cost. Back comes a read on that water: what a bloom program would change, what it would leave untouched, and a named program lead.
A live subscription already has hulls, gas and accredited crews inside the zone, in March as much as in July. Starting once a bloom has formed means assembling all of that first, and assembly runs in weeks. A bloom runs in days.
