This Aquatic Robot Is Making a Meal Out of Marine Waste

Wasteshark with nature

RanMarine has created the world’s first autonomous marine robot. Utilizing drone technology, it can collect up to 500 kg of plastic waste and destructive biomass each day, harmoniously clearing up and monitoring our waters.

As WH Auden once said, “Thousands have lived without love, not one without water.” Vital to all life on earth, our biosphere and everything living upon it would perish without it.

Despite water’s importance and our dependence on it, our continued pollution of it is putting this crucial resource at risk — our oceans are plagued by plastic to the tune of approximately 5.2 trillion macro and micro pieces, killing 1 million seabirds and 100,000 marine animals each year; toxic algal blooms are becoming more frequent and deadly, with 400 marine dead zones worldwide; and contaminated water is killing an estimated 1.2 million people each year.

In an attempt to address the severity of the situation, Dutch tech startup RanMarine is on a mission to restore the marine environment to its natural state by cleaning up our waters. It has developed the world’s first marine robot specifically designed to eat marine waste and collect data on our polluted waterways. Inspired by the way in which whale sharks suck in food and filter out water, the company’s WasteShark autonomous surface vessel (ASV) is “taking a bite out of water pollution.”

The zero-emission WasteSharks use drone technology to vacuum up plastic waste and biomass. Each one can collect up to 500 kg of waste per day, with a battery capacity of 8 hours on one charge. They’re designed to be efficient, unobtrusive and harmonious with the environment.

“We are particularly proud of the fact that zero carbon is emitted while using the WasteShark,” RanMarine founder and CEO Richard Hardiman told Sustainable Brands®. “With batteries that can be charged from the local grid or powered by solar storage systems, the WasteShark leaves no oil slicks, emits no toxic fumes and is unobtrusive on the water. These attributes ensure that it is the perfect solution for working in environments where wildlife is present — it allows you to safely collect harmful biomass and waste remotely from the shore or quayside.”

The WasteSharks’ operational routes are predetermined by the user. They carry out these routes via GPS navigation and can return home at the end of their ‘shift.’ The manual WasteSharks are essentially drones that travel through water, rather than air. They use the same technology and camera systems as a typical flying drone — including a hand-held controller. The automated drones, on the other hand, use ROS software to manage the complexity of being autonomous and having to “think for themselves” whilst deployed.

Although a mission plan is set out by the user on our web portal, RanMarineConnect, the Sharks have to be able to navigate and avoid obstacles that may not have been there at the time of planning; typically these include moving boats, moored vessels or unplanned obstacles,” Hardiman explains. “Here, we use our own internal software to navigate the drone safely to make sure the WasteShark can still do its job without endangering or colliding with other vessels.”

Data collected from the WasteSharks is geo-tagged and time-stamped, providing an accurate picture of the water quality health within an area. This representation helps verify compliance with pollution regulations, identifies potential contaminants early to minimize the impact on the environment and creates cleaner aquatic environments.

Written by Scarlett Buckley and published in Substainable Brands

“The aquatic drones can also be configured with different sensors to help monitor temperature; depth; dissolved oxygen; turbidity; blue-green algae; crude, refined oils and more. Any data collected is immediately available for reporting and analysis through the WasteShark Data Portal,” Hardiman says.

The RanMarineConnect portal allows clients to upload collected data for their own research and analysis. In the future, the RanMarine team is hoping to develop a data-sharing platform between users; but this is still at a conceptual stage.

More than 40 WasteSharks have been deployed across the globe — including in DenmarkSingapore, the UKUSAustralia and South Korea. Some of WasteShark’s clients include well-known theme parks in Orlando; the Port of Houston, Texas; and United Nations projects in Lebanon.

Hardiman says RanMarine will launch a larger WasteShark in the next six months that is capable of removing 1 ton of waste in a single load; he anticipates it being commercially available by the end of the year.

“We are also developing a docking station which houses up to 5 WasteSharks at a time, empties their baskets automatically and recharges them,” he added, “making it a total autonomous solution where humans are only required for oversight.”

more news

How autonomous surface vessels and real-time sensors tackle “dead zones” by neutralizing toxic algae and skimming decaying organic biomass.
Discover how record-breaking Sargassum seaweed levels in 2026 are impacting Caribbean tourism, room rates, and resort operations.
How an idea hatched in a Cape Town quayside became a fleet of autonomous robots cleaning waterways worldwide, and why real sustainability only works with a sound business model behind it.
Türkiye is using constructed wetlands to fight nutrient pollution and algal blooms, but the results show why active water monitoring still matters.
What South Africa’s Green Drop crisis tells us about the pressure on public waterways, and why the gap between treatment plant infrastructure and the water people actually see matters.

Ready to see our shark in action?

Get in touch for a live virtual demo or a quote.
Our team is ready to help.

Trusted by Port Authorities and Facilities Management Teams across the globe

Proven technology. Global Impact.

Don’t just take our word for it. Explore our case studies to see how our customers use data-driven autonomy to create cleaner, safer waters around the world.

Challenge Almere-Amsterdam

Restore swim-safe water quality with CyanoShark’s chemical-free Cyanobacteria / Blue-Green Algae treatment.

Hudson River Park

Combining hands-on plastic removal with hands-on public education, turning a 400-acre Estuarine Sanctuary into a living classroom for cleaner water

PortsToronto

PortsToronto’s Trash Trapping Programme added WasteSharks to supplement their harbour cleanup efforts, removing plastic debris from Toronto harbour

Our Technology

Advanced robotics designed to clean, monitor, and restore marine environments.

WasteShark

Manual & Accessible

The essential tool for calm waters

WasteShark +

Built for Professionals

Power and speed for marinas & ports

WasteShark + Pro

Intelligent Autonomy

LiDAR guided cleaning with data capabilities

CyanoShark

Harmful Algae Solution

Specialized filtration to remove harmful blooms and biomass

MegaShark

Industrial Capacity

Heavy-duty waste removal for ports and large waterways

RanMarine Connect

Unified Data Platform

Real-time water quality monitoring and fleet management

Talk to Us

Tell us what you’re dealing with, we’ll help you find the right solution.

Cleaner waters, delivered to your inbox.

Join 2,000+ subscribers receiving the latest updates on marine technology and sustainability.

Schedule your demo

Book your 30-minute live demo with a RanMarine specialist.
(Subject to location and availability)

Request your brochure

Please select the product or data service of interest below to receive the technical documentation.

Submit a Support Ticket