# Filmmaker captures invasive species in River Thames

> Barny Dillarstone films signal crayfish and mitten crabs in London's River Thames using night-vision camera.
- Title: Filmmaker captures invasive species in River Thames | Shortify
- Summary: Barny Dillarstone films signal crayfish and mitten crabs in London's River Thames using night-vision camera. Barny Dillarstone discovered invasive signal…
- Keywords: barny dillarstone, river thames, signal crayfish, chinese mitten crab, invasive species, night-vision camera, Filmmaker, captures, invasive, species, River, Thames
- Source: Digital Camera World — https://digitalcameraworld.com/photography/underwater-photography/filmmaker-captures-invasive-species-by-dropping-night-vision-camera-into-the-river-thames-murky-depths
- Published: 2026-10-09T08:00:00+00:00
- Read time: 1 min
- Topics: barny dillarstone, river thames, signal crayfish, chinese mitten crab, invasive species, night-vision camera
## Barny Dillarstone's underwater camera project
Filmmaker Barny Dillarstone uses night-vision cameras to explore hidden aquatic species in rivers and oceans.
## Dropping camera into Thames river
Barny lowered a night-vision camera into London's River Thames using a rope system to capture underwater life.
## Signal crayfish discovered
Barny found signal crayfish, an invasive species from North America introduced in the 1960s that outcompetes native species.
## Chinese mitten crab found
Barny discovered Chinese mitten crabs that erode riverbanks and outcompete native species in the Thames.
## Invasive species impact
Both species threaten the River Thames ecosystem by outcompeting native species and causing riverbank erosion.
## Key takeaway

Barny Dillarstone discovered invasive signal crayfish and Chinese mitten crabs in the River Thames using a night-vision camera.