There have been several sightings (including by your webmaster) of harbour porpoises in the Medway in the last few weeks, as far up as Rochester Bridge. The presence of these small members of the dolphin family suggests a good supply of fish, probably as a result of tighter environmental legislation and the decline of local industry. These mammals are shy and if you blink you miss them! If you are lucky enough to get a photo please send it to email@example.com
UPDATE: A couple of porpoises have been spotted as far upstream as Rochester Cruising Club. Any advance?