The Seahorse Trust said the seahorse was the fourth biggest ever recorded.

The moorings stop boats dropping their anchors, which can drag along the seagrass beds.

Only seven sightings of long-snouted seahorses have been recorded in Cornwall since 2014.

A diving contractor came across the female seahorse while pulling up moorings in Hamble Estuary.

An additional 57 eco-moorings for boats will be installed to help protect the delicate eco-system.

Scientists release a record number of an endangered species into the wild to boost numbers.

The short-snouted seahorse is usually in shallow waters but was found outside of Harwich Harbour.

Neil Garrick-Maidment, who founded the Devon-based Seahorse Trust, receives the David Bellamy Award.