| Number seen/Abundance | Date | Location | Comments | Recorded by |
|---|---|---|---|---|
| 4 | 2004-01-21 | Barnpool Plymouth Sound. |
At least 4 seen feeding on Mackerel in Barnpool- Bridges area | Paul Bradshaw |
| 1 | 2002-07-18 | Millisle Off Millisle, Co. Down |
Small porpoise, difficult to see in rough seas. | Gary Burrows |
| 1 | 2002-07-20 | Off Islandmagee, Co. Antrim. |
Small porpoise swiming alone. | Gary Burrows |
| 2 | 2001-07-08 | 1ml. S. of Bach Island in Firth of Lorne |
breaking surface every 20secs (approx.) swimming south | Andy Law |
| 5 | 2002-07-13 | Abersoch bay/St Tudwals Islands |
Every day at 10.00 and 16.00 | Paul Fish |
| 1 | 2002-07-16 | Carlingford Lough, close to marina. |
1 Small porpoise. Depth 4.1 metres, water temperature 15.5 C. | Gary Burrows |
| 2 | 2002-08-10 | Off Creag Island, Lismore, West coats of Scotland |
Skipper of boat saw two harbour porpoise | Skipper Fishing vessel |
| 3 | 2002-07-17 | Off St. John's Point, Ardglass, Co. Down. |
3 Harbour Porpoise. Depth 22.7m and 13.7 C water temperature. | Gary Burrows |
| 1 | 2001-08-19 | Approaching Lundy from the east |
No information entered | Keith Hiscock |
| 2 | 2002-08-05 | Off Porthminster beach St Ives Bay |
David Stamp | |
| 2 | 2002-07-15 | Approx 12-15 miles off east coast Ireland (Howth Head) |
1 adult and 1 small calf. Depth 21.5metres and water temperature of 15.3 C. | Gary Burrows |
| 2 | 2001-08-30 | 1 mile south of Eyemouth, Berwickshire |
several sightings of 2 porpoises swimming near boats at dusk | Sarah Stark |
| 11 | 2004-07-07 | Lleyn Peninsula Between Porth Widlin and Maenmellt. Lleyn Peninsula, N. Wales. |
groups of three, breaking surface, 2 adults with juvenile mulling about / feeding | Pete Wilkinson |
| P | 2004-07-08 | Ogmore-by-Sea Ogmore-by-Sea approximately 15 metres offshore loacated approximately 60 metres (easterly) beyond main beach access path (lower left hand corner of field). |
Swimming in a westerly direction stopped at one point to swim in a circular motion. | Stephen Furley |
| 1 | 2004-08-13 | Swansea Bay Entering into the further reaches of Swansea Bay toward the port of Neath |
Observed swimming while being passed by boat | Stephen Furley |
| 2 | 2004-08-13 | Swansea Bay Approaching Swansea Bay from Mid Bristol Channel travelling from Ilfracombe - port of Neath |
Approx. 14.00hrs. Observed swimming while being passed by boat | Stephen Furley |
| 1 | 2002-06-25 | Old Wall 0.4 nautical miles NNE "Old Wall" (1 nautical mile SSE St. Anthony Light House), Falmouth Bay. |
1sr seen 50 m ahead swimming in circle, dived out of sight and must have passed under boat. Next seen 100m astern, again swimming in a circle. Seemed to be moving NE. | David Beckinsale |
| 1 | 2002-07-14 | Approx 15 miles off Howth Head, Dublin. Sea state 1. Depth 56.4 metres and water temperature of 13.2 |
A small harbour porpoise swimming slowly. Water depth 82.8m, water temperature 13.5 C. | Gary Burrows |
| 5 | 2002-07-09 | Ramore Head East of Ramore Head, Portrush, Co. Antrim. |
10-11 AM, approx 1 hour before low tide. Calm seas, sunny day. 1 group of three adults and 1 group comprising a female and calf, swimming slowly. Frequently changing direction and diving out of sight every few minutes. | Gary Burrows |
| 5 | 2001-07-02 | Plymouth Sound Seen from Val de Loire ferry (travelling to Santander), within hour of leaving Plymouth ferryport. |
Seen from Val de Loire ferry (travelling to Santander), within hour of leaving Plymouth ferryport. | Ken and Maureen Newton |
| 2 | 2001-07-08 | Bach Island 1ml. S. of Bach Island in Firth of Lorne |
breaking surface every 20secs (approx.) swimming south | Andy Law |
| 5 | 2002-07-13 | Abersoch bay Abersoch bay/St Tudwals Islands |
Every day at 10.00 and 16.00 | Paul Fish |
| 2 | 2002-08-10 | Off Creag Island, Lismore, West coats of Scotland |
Skipper of boat saw two harbour porpoise | Skipper Fishing vessel |
| 4 | 2001-05-05 | Bigbury on sea Bigbury on sea, close in to Burgh island, South Devon. |
Small group came in close to shore accompanied by gulls. A lot of activity for five minutes and then headed out to sea. | Samuel Parr |
| 6 approx | 2002-07 | Blue Pool, Porthrush, east of Ramore Head |
Resident pod seen regularly, Portrush area (?) | Deirdre Walsh |
| 5 | 2002-03-00 | Groomsport Bay Groomsport Bay, Belfast Lough. |
2 large animals and 3 smaller ones near shoals of herring | Eric Brown |
| P | 2001-08-10 | Helston By Helston special mark in Falmouth Bay. (13.10 hrs) |
Briefly spotted 2 or 3 swiming N by E at around 4kt. Distance from boat around 75m | David Beckinsale |
| 3 | 2004-09-10 | Ogmore by Sea Approx. 50 m offshore in front of my home at Craig-yr-Eos Road |
Slowly swimming easterly towards Southerdown | Stephen Furley |
| P | 2004-08-28 | Marden rocks Marden rocks, Alnmouth. About 300m off shore |
Most days about 3/4 to 1.5 miles off between Alnmouth and coquet Island. Usually appears to be one adult with either one or two juveniles. Always swimming leisurely north or south surfacing regularly every 10 to 15 secs | Michael Bould |
| P | 2005-04-01 | Foyle In the river Foyle approxamately 500 metres from the Foyle bridge, heading up the river in the opposite direction of the sea. then twice again the following day but this time closer to the Foyle Bridge. |
Not sure if one or a group seen in the middle of the river, it was a very calm day | Frankie Quigley |
| >6 | 2005-10-23 | English channel, making way from Dartmouth to Jersey. |
Open ocean @ BST 06:30 hrs heading East. | Sonia Rowley |
| 3 | 2005-08-27 | Approximately 1/2 mile into Swansea Bay/Neath Rivermouth/Port of Neath. |
Observed swimming while being passed by a boat. | Stephen Furley |
| 2 | 2006-09-25 | Loch Long near to Ardentinny |
Seen near to the beach at Ardentinny | FRANCES WILSON |
| 1 | 2007-01-10 | Low intertidal zone on Ferring Beach in line with the footpath from Ocean Drive. |
Washed up dead and badly decomposed. | Dee Christensen |
| 1 adult, 1 juvenile | 2007-08-01 | Witches Point Witches Point near Southerndown |
approx 40m offshore travelling easterly | Dave Boyce |
| Two | 2008-08-14 | In the mouth of Widewall Bay. (Pentland Firth/ Scapa Flow) |
Used to see groups of five to eight here every year, this is the first pair this year! | Richard Ian Thompson |
| 10 | 2009-07-03 | Bull Bay, Anglesey Seen from the coastal path |
Seen from the coastal path along the cliffs | Peter Smallwood |
| 1 | 2009-07-07 | Blakeney long shingle and sandy beach |
Had been dead for a few days. was washed up on in the high tide line. | Tom Young |
| 2 | 2009-12-12 | Hilsea Point About 0.5 km south of Hilsea Point |
Two porpoises within c. 15m of boat. Clear but brief views. Identified by small size, blunt nose and small dorsal fin. | Keith Hiscock |
| 15 | 2010-01-14 | Groomsport Groomsport beach, North Down |
Seen approx 50metres from shore of groomsport beach heading towards Bangor direction | Aoife Tolerton |
| 4-6 | 2009-06-13 | Carrick Castle On a mooring rope, in Carrick Bay |
several porpoises as we went up the CLyde towards Carrick Castle | Sarah Brown |
| 4 | 2009-07-03 | Tobermory On passage from Tobermory to Droma Buidhe |
Between tobermory and Drumbuie | Sarah Brown |
| 1 | 2009-08-07 | Soay Sound V1 |
swimming | Sarah Brown |
| 5 | 2010-07-13 | Seas off Dartmouth, Devon, England Coastal water 20m depth |
Near tide line | Val Brown |
| 2 | 29/07/2011 | Sea off North Devon between Clovelly and Hartland Quay Sea up to about a mile offshore in North Devon. |
Jay Nicholson | |
| 1 | 09/10/11 | Highcliffe Highcliffe coastline |
Washed up dead juvenile on shoreline. | Helen Keeling |