Dead zones
Oxygen falls below the line life can hold on to, under a thermocline where surface aeration never reaches it.
Immediate, Significant, Scaled
Aquatic Prosperity Services
You buy better water. You co-design the water-quality indicators and tolerances our systems hold, in compliance with governing authorities. A characterization of your water shapes the program; in-situ and earth-observation data add transparency and control.
2 mg/L
The dissolved-oxygen line below which NOAA classes coastal water as hypoxic — the line we are hired to move
NOAA NCCOS
400+
Coastal dead zones counted worldwide, a total that had been roughly doubling every decade since the 1960s
Diaz & Rosenberg, Science, 2008
48%
Share of the world's desalinated water produced in the Middle East and North Africa, across 15,906 plants worldwide
Jones et al., Science of the Total Environment, 2019
What we sell
Better water, on subscription, held all year and written to your own column.
The product is a set of outcomes, agreed for a named service zone and written down before a system is deployed. We do not sell the systems or rent them out, so there is no asset to depreciate, no machine time to purchase, and nothing on your books but the result. The treatment stage, in full.
You subscribe to a continuous program, delivered by a licensed service operator inside parameters both sides sign off in advance: the indicator set, the limits each one has to sit inside, the sampling points and their frequency, and the conditions that oblige us to stop. Those limits are argued against a characterization of your own water, so the baseline your regulator reads is the one that coast produced. No two are alike. A column moves, the politics around it move, and the economics of whoever is paying move faster than both; a reef-lagoon document would be wrong in a port basin even where the chemistry rhymes.
There is no month when nothing is arriving: nutrients keep coming off the land, heat keeps loading the column, and the organic burden left by the last event is the next one's head start. Stressors accumulate. A program that works every month holds each of them down while it is still small, cheap and reversible. Close to a supply, where a population drinks what its membrane plants produced that morning, the water in front of an intake stops being an amenity question.
Response bought after a stressor has built is bought at the worst hour: vessels, industrial gas and accredited crew found at short notice price like the emergency they are, consent that takes weeks in advance takes weeks you no longer have, and the buyer has nothing left to negotiate with. A standing subscription makes this level of service purchasable at all, for whoever arranges it while the water is still behaving.
Contained treatment keeps the water moving. A SeaBreather-class hull is specified at roughly 5,000 gallons a minute — our figure, for a class specified and not yet in the water, which the calibration phase measures on your own water — so nothing queues aboard waiting on a signature. What is contained is the reaction, inside a closed reactor, under instruments that can cut the oxidant on their own reading.
There is no storage on a hull: water is drawn through, worked on in motion and put back into the water it left, so what a program leaves behind is better water where the bad water was.
Three checks sit on the work while it is happening. Inline instruments govern the pass as it happens and cut the oxidant without consulting anybody; the institution that already answers for that water holds the same live feeds our crew steers by; and under the service agreement you, or an agent you qualify, can put an active deployment on hold on any suspected infraction until the concern is cleared. A client who can stop the work does not need to be sold perfection.
The fourth is the exit. A subscription is canceled on two grounds: performance outside the agreed spec, or a client who has served the minimum period and is not satisfied — for any reason, without having to prove one. A service meant to run for years should have to keep earning the year it is in.
Cancellation is the remedy the standing terms carry. Remedies that stop short of it are negotiable in the service level agreement — service credits against the fee, liquidated damages, a bond on performance — and they are drafted against the same parameters they would be measured by. Their form and their size are settled in the negotiation, so no figure for any of them is published before a site read.
Off your side of the table: capital, procurement, crewing, an analytics stack, and the internal argument about which department owns a boat. Still on it: your own regulator, the land-use reform only policy can deliver, and the authority to halt a deployment.
Impact Ready
The work
Four things go wrong in coastal water, and they go wrong together.
A bay rarely has one problem. Heat drives stratification, stratification strips the oxygen, the oxygen deficit finishes what the bloom started, and the intake fouls while everyone is still arguing about the cause.
Harmful algal blooms
Bloom material arrives faster than a plant, a pen or a beach can be protected from it.
Thermal stress
Warm water holds less oxygen and stratifies harder, so heat sits upstream of most of the rest.
Contamination
Spills, ballast and contaminated discharge: take the compound apart, and keep what lives around it breathing.
Oversight
The second copy of the record sits outside this company.
Engaged from the site read, with the program written to hold that engagement to the end of the contract and its own copy of the record kept throughout.
Whoever already carries that water locally — a marine institute, a fisheries laboratory, an estuary program, a ministry's own scientists — comes in before the first hull moves, and their accountability for that coast outlives our contract on it.
They hold the live feed a crew steers by, arriving at the same moment, from a start date written into the program scope, and they are free to bring instruments we have never touched and data we cannot see.
Two parties end up holding the same record, month after month. Only one of them is paid to like what it says.
The systems
One license, one crew, and systems that keep getting better.
Many of the systems behind a program are the intellectual property of our parent company, Sophia Delta, and partners supply further capability. Alarivean licenses those systems and does the work, with the vessels, crews, permits and liability in our name and in our service zones. Most of what a program does rests on a small core of systems, and they change: setpoints are re-honed per area, season and stressor as the record grows. A client buys the state of their water, so a better method arriving mid-term changes our costs and not their scope.
Systems include:
SeaBreather
The hull and its oxygen duty: dissolved oxygen returned to the layer that lost it.
HABslayer
Bloom water and the toxins in it, drawn in and broken down before the water goes straight back.
ChemSlayer
Oil spills, ballast and contaminated discharge, with oxygen life support around the incident.
ReefHealer
Cooling, oxygenation and clarity for reefs and aquatic nurseries.
Fluid Nano
Lakes, lagoons, rivers, process water, cooling loops, desalination intakes and discharges.
NanoponiX
Oxygenated irrigation for yield and water-use efficiency, including saline ground.
SoilScrubber
Dried lakebed, playa, oil-affected shore and contaminated ground, with the toxins in them sterilized where they lie.On the record
Permit FLOA00062, and the trial Florida allowed.
Florida's Department of Environmental Protection issued permit FLOA00062 in September 2024, for a red tide mitigation field trial on a five-year window. It may be exercised only while live Karenia brevis stands above 100,000 cells per liter, so it runs during the event it was written for and at no other time.
The Sarasota Bay Estuary Program and the nonprofit START each wrote the grant up on their own sites. The estuary program gave the application technical support, took no money for it, and wants to hold the instruments when open-water evidence is produced. So do we.
No open-water result has been published yet; a calibration phase on your own water produces the first one. Every document behind a program.
Ten minutes, no data pack
Name the coastline you have to answer for.
The coast, the sectors on it, the months it fails, and the horizon you plan against. Back comes a staged assessment — exposed sectors, event history, where a calibration phase would sit — and a named program lead in writing before anything is contracted.