Skip to Content
Artificial intelligence

Meet the robot submarine that acts as a lionfish predator

The Guardian LF1 robot.
The Guardian LF1 robot.Robots in Service of the Environment (RSE).

This submersible robot, called Guardian LF1, hunts, stuns, and captures lionfish, invasive predators that are threatening native fish and crustaceans in the Atlantic Ocean.

Predator: The Guardian LF1 features eight thrusters, an onboard computer,  a camera, and a power source, along with a set of low-voltage “stunning panels” and a chamber for storing captured fish. It is controlled from the surface using a tether but includes an autopilot and a computer vision system capable of distinguishing lionfish from other species.

Prey: Lionfish (more properly known as “pterois”) are native to the Indo-Pacific Ocean,  were introduced to the waters off the US several decades ago, and have since spread through the Caribbean and Gulf of Mexico. Without a natural predator, they’ve thrived, wreaking havoc in native ecosystems.

Profit: The robot costs around $1,000 but could net its operator $1,500 to $2,000 worth of lionfish on a good day, its creators claim (assuming the fish can be sold for food). The latest version of the robot can dive to 1,000 feet, below the reach of sport divers. The robot was created by a nonprofit called Robots in Service of the Environment (RSE), founded by Erika Angle and her husband Colin, who is cofounder and CEO of iRobot.

The point: The Guardian LF1 shows how the cost of sensors and advanced algorithms is dropping. iRobot makes a range of successful home robots, including the Roomba robot vacuum cleaners, which themselves have evolved into highly adept navigators. While the first Roombas tootled around blindly, the latest version includes the ability to map its owner's home.

Deep Dive

Artificial intelligence

DeepMind’s cofounder: Generative AI is just a phase. What’s next is interactive AI.

“This is a profound moment in the history of technology,” says Mustafa Suleyman.

AI hype is built on high test scores. Those tests are flawed.

With hopes and fears about the technology running wild, it's time to agree on what it can and can't do.

You need to talk to your kid about AI. Here are 6 things you should say.

As children start back at school this week, it’s not just ChatGPT you need to be thinking about.

AI language models are rife with different political biases

New research explains you’ll get more right- or left-wing answers, depending on which AI model you ask.

Stay connected

Illustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at customer-service@technologyreview.com with a list of newsletters you’d like to receive.