Marine Wildlife

Marine Wildlife: Dolphin Boat Strike Prevention

Collisions between high-speed vessels and dolphins are a significant cause of injury and mortality, with prevention measures centred on speed reduction and awareness.

Key Facts

Fast ferries and recreational speedboats pose the highest collision risk to dolphins
Impact at 30 knots or above is almost always fatal to dolphins and porpoises
The Mediterranean and narrow channels around the UK are high-risk zones
Dedicated lookout posts and speed restrictions in cetacean habitats reduce collision risk
Acoustic deterrents fitted to vessels have shown limited effectiveness alone

Welfare Considerations

Vessel strikes cause traumatic injuries including blunt force trauma, propeller lacerations, and fatal internal haemorrhage. Deaths are likely rapid in high-speed collisions but not always so, particularly in low-speed propeller strikes. Prevention is straightforward through speed reduction and awareness, representing a major achievable welfare gain for coastal dolphin populations.

What You Can Do

Reduce vessel speed in areas known for dolphin activity
Post a dedicated lookout when operating in cetacean habitats
Report any vessel strike incident to the relevant wildlife authority
Support speed restriction zones in sensitive marine areas
Choose wildlife-watching operators that follow responsible watching guidelines