In 2018, Australia’s RangerBot identified coral-eating crown-of-thorns starfish with 99.4% accuracy and was designed to target them with bile-salt injections

An innovative robot named RangerBot has been developed to address a significant threat to coral reefs. The crown of thorns starfish population is increasing due to environmental factors, which harms coral cover. RangerBot can accurately identify and inject these starfish with a lethal substance while preserving other marine life. It improves efficiency in reef restoration by also delivering coral larvae to damaged areas.
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