Our Project

Engineering a Smarter Way to Protect Our Rivers 🦞 

Craw CTRL is a student-led project focused on creating a smart, sustainable solution to one of the UK’s growing ecological problems: the spread of invasive signal crayfish (Pacifastacus leniusculus). These non-native crayfish have caused significant disruption to freshwater ecosystems by damaging riverbanks, outcompeting native species, and spreading crayfish plague. This disease is fatal to the UK’s endangered white-clawed crayfish (Austropotamobius pallipes). 

To address this, we are developing a reusable underwater crayfish trap that integrates environmental sensors, AI-powered species identification, and wireless monitoring. The trap features a biomimetic entry valve inspired by the Genlisea plant. This design allows invasive crayfish to enter while reducing escapes and minimising the capture of non-target species. 

Inside the trap, a waterproof camera works alongside AI software to visually confirm species. A dissolved oxygen sensor is used to detect signs of overcrowding, helping to maintain welfare standards and ensure effective operation. Data from the trap is transmitted wirelessly to a connected system, allowing for real-time updates and easier monitoring by conservation teams. 

Craw CTRL brings together elements of engineering, biology, and digital technology to build a practical conservation tool. The trap is designed to be low-impact, efficient, and deployable in real freshwater environments. It aims to support wider conservation efforts and contribute to the protection of native biodiversity in the UK.