| Date | Hour | Min | Species | Number | Location | By |
| 15/11/2008 | 14 | 30 | Unidentified Small Cetacean | 1 | Off east side of Calf Sound | L Browne |
| 21/09/2008 | 13 | 0 | Risso's Dolphin | 1 | 200m off Marine Drive | Shane Stigant |
| 18/09/2008 | 8 | 0 | Risso's Dolphin | 2 | NW of Kitterland - The Sound, Calf of Man | Richard Sampson |
| 13/09/2008 | 14 | 0 | Risso's Dolphin | 1 | Off Gibdale Bay, seen from Calf of Man | Kate Hawkins |
| 12/09/2008 | 17 | 48 | Harbour Porpoise | 3 | 800 m NE of beach, Ayres Visitors Centre | John Donnelly & Lorraine |
| 12/09/2008 | 17 | 20 | Harbour Porpoise | 1 | 400m off Ayres Visitors Centre | John Donnelly & Lorraine |
| 12/09/2008 | 17 | 8 | Harbour Porpoise | 3 | 300m off Ayres Visitors Centre, going back and forth | John Donnelly & Lorraine |
| 12/09/2008 | 15 | 0 | Minke Whale | 2 | Laxey Bay and Clay Head 500m off shore | Manx Cetacean Surveys |
| 12/09/2008 | 15 | 0 | Minke Whale | 1-2 | Surfacing by boat, 1 mile off Laxey Head | Les Kneale |
| 12/09/2008 | 11 | 30 | Minke Whale | 1 | 4 mile SW of Langness | Manx Cetacean Surveys |
| 12/09/2008 | 9 | 45 | Minke Whale | 1 | 500m off Port Soderick | Manx Cetacean Surveys |
| 08/09/2008 | 15 | 0 | Minke Whale | 1 | 300m off Laxey Head, swimming S | Manx Cetacean Surveys |
| 08/09/2008 | 13 | 15 | Unidentified Large Cetacean | 1 | Breaching, 800m W of the Sound, Calf of Man | Jessica Richards |
| 08/09/2008 | 8 | 0 | Common Dolphin | 32 | Survey Box 5, S of Calf | Manx Cetacean Surveys |
| 08/09/2008 | 7 | 40 | Harbour Porpoise | 6 | Off Kallow Point, PSM | Graham Hall |
| 08/09/2008 | 7 | 30 | Harbour Porpoise | 112 | Survey Box 5, S of Calf | Manx Cetacean Surveys |
| 08/09/2008 | 7 | 30 | Risso's Dolphin | 1 | Bay ny Carrickey. | Graham Hall |
| 08/09/2008 | 7 | 5 | Harbour Porpoise | 2 | Bay ny Carrickey. | Graham Hall |
| 02/09/2008 | 17 | 35 | Minke Whale | 1 | 3 miles NW of Dalby Point | John Galpin |
| 02/09/2008 | 13 | 0 | Killer Whale | 1 | Heading N, 150m off Bradda Head | Aaron Ledingham |
| 30/08/2008 | 16 | 15 | Risso's Dolphin | 1 | 200 metres due south of Spanish Head | Nina Shimmin |
| 30/08/2008 | 16 | 0 | Risso's Dolphin | 25 | 200m E of Burroo at the S end of the Calf | Debbie McGregor |
| 30/08/2008 | 15 | 15 | Risso's Dolphin | 20 | Rounding Spanish Head and swimming into the Sound | Paul, Ryan and Craig Cain |
| 29/08/2008 | 13 | 10 | Harbour Porpoise | 2 | 1400 mtrs NW of Dalby Point | Brian B Maddrell |
| 29/08/2008 | 13 | 0 | Harbour Porpoise | 3 | 1200m NW Dalby Point | Brian B Maddrell |
| 29/08/2008 | 12 | 15 | Risso's Dolphin | 1 | Entered Bay Stacka around Black Head, circled and headed E. | Peter Hulley |
| 28/08/2008 | 2 | 25 | Common Dolphin | ~5 | 16 miles SW of Calf | Tim Pilcher |
| 27/08/2008 | 14 | 0 | Minke Whale | 2 | Backwards and forwards across Port Cornaa bay for 1 hour | Lesley Wills |
| 26/08/2008 | 8 | 0 | Dolphin Species - poss Common | ~6 | Splashing around just 50 - 100m off the Dog Mills, nr Ramsey | Jade McKinlay |
| 24/08/2008 | 15 | 36 | Minke Whale | 1 | 300m NW of Dalby Point | John Galpin |
| 22/08/2008 | 16 | 30 | Risso's Dolphin | 7 | 100 m off Fort Island/400 m off Aero Club | Pete Hadfield |
| 21/08/2008 | 20 | 15 | Harbour Porpoise | 3 | Crossing Perwick Bay East to West | Ian Killip |
| 20/08/2008 | 20 | 10 | Common Dolphin | ~20 | ~1200m SW of Contrary Head | Tim Pilcher |
| 16/08/2008 | 10 | 14 | Harbour Porpoise | 3 | 1000m NW of Dalby Point | John Galpin |
| 13/08/2008 | 8 | 50 | Minke Whale | 1 | Breaching 300m NW of Dalby Point | Val Galpin |
| 11/08/2008 | 17 | 6 | Dolphin Species | 1 | Breaching 200 mtrs off Dalby Point | John Galpin |
| 07/08/2008 | 14 | 0 | Minke Whale | 2-3 | 2-3 minkes 5 nm WNW of Peel. | David Holdsworth |
| 07/08/2008 | 11 | 29 | Harbour Porpoise | 2 | 1.5 Miles off Fleshwick | Manx Basking Shark Watch |
| 04/08/2008 | 19 | 0 | Harbour Porpoise | 1 | Off Fleshwick | Debbie McGregor |
| 03/08/2008 | 11 | 15 | Harbour Porpoise | 6 | Actively feeding group in Perwick Bay | Graham Hall |
| 31/07/2008 | 20 | 30 | Dolphin Species | 1 | Small cetacean breaching ~300 m off Fenella | Shaun Sweeney |
| 31/07/2008 | 13 | 0 | Minke Whale | 2 | Breaching clear of the water near Bradda Head | Irene Aston |
| 27/07/2008 | 20 | 0 | Harbour Porpoise | 2 | 2 miles NW Peel Hill | Manx Basking Shark Watch |
| 27/07/2008 | 15 | 20 | Harbour Porpoise | 2 | 3 Cables SE of Chasms | David Richards |
| 26/07/2008 | 17 | 7 | Harbour Porpoise | 4 | 1.5 Km NW of Sound | Graham Hall |
| 26/07/2008 | 16 | 6 | Harbour Porpoise | 1 | 2 km NW of Kitterland | Graham Hall |
| 26/07/2008 | 15 | 10 | Harbour Porpoise | 1 | 0.5 miles NW of Bradda | Graham Hall |
| 26/07/2008 | 14 | 45 | Minke Whale | 1 | 2.75 miles west of Bradda | Nina Shimmin |
| 23/07/2008 | 21 | 25 | Harbour Porpoise | 2 | 1200 mtrs NW of Dalby Point | Brian B Maddrell |
| 23/07/2008 | 21 | 11 | Harbour Porpoise | 2 | 1400 mtrs NW of Dalby Point | Brian B Maddrell |
| 23/07/2008 | 20 | 45 | Harbour Porpoise | 1 | 1300 mtrs NW of Dalby Point | Brian B Maddrell |
| 20/07/2008 | 12 | 30 | Common Dolphin | 5 | Ramsey Bay - approx 1 mile off-shore | Vivienne Hare |
| 16/07/2008 | 17 | 50 | Harbour Porpoise | 2 | Fort Island - 300m east offshore | Steve Wright |
| 13/07/2008 | 8 | 30 | Harbour Porpoise | 2 | 1 mile off Bulgham Bay | Matthew Lamberton |
| 09/07/2008 | 15 | 0 | Harbour Porpoise | 2 | 200m off-shore MWT Ayres Visitor's Centre | Brenda Jones |
| 09/07/2008 | 11 | 0 | Risso's Dolphin | 10 | Seen from Niarbyl | Tom Felce |
| 06/07/2008 | 22 | 15 | Unidentified Small Cetacean | 3 | Going N across Douglas Bay in the twilight. | Christine Pickering |
| 06/07/2008 | 18 | 10 | Minke Whale | 2 | 3 miles NW of Dalby Point | John Galpin |
| 04/07/2008 | 13 | 15 | Risso's Dolphin | 12 | ~3 miles SW of Dreswick Point, Langness | Manx Cetacean Surveys |
| 03/07/2008 | 13 | 0 | Minke Whale | 1 | ~5 miles S of Langness | Mary McDermott |
| 03/07/2008 | 7 | 15 | Harbour Porpoise | 2 | In Perwick Bay | Graham Hall |
| 03/07/2008 | 6 | 25 | Harbour Porpoise | 2 | Off PSM Breakwater | Graham Hall |
| 29/06/2008 | 11 | 45 | Harbour Porpoise | 4 | Kallow Point, Port St Mary | Steve Cowley |
| 24/06/2008 | 17 | 55 | Harbour Porpoise | 2 | 100m off-shore. Perwick Bay | David Roberts |
| 16/06/2008 | 12 | 20 | Humpback | 1 | Tail fluking 15 m off-shore south end of Port Soderick | Terry Losh |
| 11/06/2008 | 16 | 20 | Dolphin Species | 1 | Between Tollgates and Douglas Head, Marine Drive | Jan Quayle |
| 07/06/2008 | 16 | 25 | Harbour Porpoise | 2 | North of the Kitterland | Graham Hall |
| 07/06/2008 | 11 | 15 | Harbour Porpoise | 2 | Kallow Point | Graham Hall |
| 05/06/2008 | 17 | 40 | Harbour Porpoise | 1 | Seen near Kione ny Ghoggan headed towards Kallow Point | Ian Killip |
| 05/06/2008 | 12 | 30 | Risso's Dolphin | 2 | Centre of Douglas Bay heading to Onchan Head | Mary and Norman Roper |
| 05/06/2008 | 11 | 30 | Risso's Dolphin | 1 | Between toll gates Douglas Head and Little Ness Port Soderick | Kevin Quilliam |
| 03/06/2008 | 18 | 30 | Harbour Porpoise | 2 | Ledges PSM | Graham Hall |
| 03/06/2008 | 6 | 45 | Harbour Porpoise | 1 | Off PSM Breakwater | Graham Hall |
| 02/06/2008 | 22 | 55 | Harbour Porpoise | 6 | Kallow Point SE 400m. | Graham Hall |
| 02/06/2008 | 22 | 55 | Harbour Porpoise | 1 | Bay Ny Carrickey | Graham Hall |
| 02/06/2008 | 18 | 45 | Harbour Porpoise | 1 | Kallow Point | Graham Hall |
| 02/06/2008 | 18 | 40 | Harbour Porpoise | 2 | 700m off Port St Mary breakwater | David Roberts |
| 02/06/2008 | 18 | 30 | Harbour Porpoise | 2 | The Sound - 200m west | Steve Wright |
| 02/06/2008 | 14 | 20 | Harbour Porpoise | 1 | Just N of Chicken Rock | Graham Hall |
| 02/06/2008 | 14 | 20 | Harbour Porpoise | 2 | Chicken Rock | Graham and Jackie Hall |
| 02/06/2008 | 14 | 20 | Harbour Porpoise | 1 | N Chicken Rock | Graham Hall |
| 02/06/2008 | 12 | 45 | Harbour Porpoise | 1 | Bay ny Carrickey. | Graham and Jackie Hall |
| 02/06/2008 | 12 | 0 | Harbour Porpoise | 2 | 2 miles N of Elby Point | Mal. Kelly, Foillan Beg |
| 02/06/2008 | 11 | 0 | Common Dolphin | 1 | Near Spanish Head | Mike and Anne Crutchley |
| 02/06/2008 | 10 | 43 | Risso's Dolphin | 5 | 1 mile SW of Langness | Manx Cetacean Surveys |
| 02/06/2008 | 10 | 30 | Harbour Porpoise | 3 | SE of Langness | Manx Cetacean Surveys |
| 01/06/2008 | 21 | 45 | Harbour Porpoise | 1 | Just off the arches on Marine Drive | Sharon Keig |
| 01/06/2008 | 21 | 15 | Harbour Porpoise | 2 | Carrick Bay | Graham Hall |
| 01/06/2008 | 21 | 10 | Harbour Porpoise | 2 | Carrick Bay | Graham Hall |
| 01/06/2008 | 8 | 10 | Harbour Porpoise | 1 | 100m off the Ledges PSM | Graham Hall |
| 01/06/2008 | 6 | 50 | Harbour Porpoise | 1 | Kallow Point SW 400m. | Graham Hall |
| 31/05/2008 | 17 | 0 | Risso's Dolphin | 3 | Centre of Douglas Bay | Sue Howe |
| 31/05/2008 | 13 | 50 | Harbour Porpoise | 1 | The Sound - 400m west of Kitterland | Steve Wright |
| 31/05/2008 | 13 | 0 | Harbour Porpoise | 1 | NW of Peel | Mal. Kelly, Foillan Beg |
| 31/05/2008 | 11 | 30 | Harbour Porpoise | 12 | West side of Calf, 75m off shore | Manx Bird Atlas |
| 31/05/2008 | 8 | 15 | Harbour Porpoise | 5 | 1000m E of Port Erin breakwater | Mann Scuba Divers |
| 30/05/2008 | 15 | 40 | Harbour Porpoise | 2 | To the north of Niarbyl | Tom Felce |
| 30/05/2008 | 14 | 45 | Harbour Porpoise | 1 | Sound - West coast 200m offshore | Steve Wright |
| 30/05/2008 | 13 | 30 | Harbour Porpoise | 5 | Off the Ledges, PSM | Tom Felce |
| 30/05/2008 | 10 | 0 | Harbour Porpoise | 1 | Off Langness, near Herring Tower | Tom Felce |
| 30/05/2008 | 6 | 55 | Harbour Porpoise | 2 | 500m S Kallow Point | Graham Hall |
| 30/05/2008 | 6 | 0 | Harbour Porpoise | 2 | Just off Kallow point-100m | Graham Hall |
| 30/05/2008 | 5 | 55 | Harbour Porpoise | 2 | Off PSM Breakwater | Graham Hall |
| 30/05/2008 | 1 | 3 | Harbour Porpoise | 2 | 300m NW of Fleshwick | Manx Bird Atlas |
| 30/05/2008 | 1 | 0 | Harbour Porpoise | 2 | Just off Caigher Point, The Calf of Man | Manx Bird Atlas |
| 29/05/2008 | 20 | 50 | Harbour Porpoise | 5 | Carrick bay | Graham Hall |
| 29/05/2008 | 20 | 40 | Harbour Porpoise | 1 | Carrick Bay | Graham Hall |
| 29/05/2008 | 18 | 45 | Harbour Porpoise | 7 | 2.5 cables SSE of Carrick Rock | David Richards |
| 29/05/2008 | 16 | 45 | Harbour Porpoise | 2 | Towards Langness from PSM, just off the Ledges | Tom Felce |
| 29/05/2008 | 16 | 30 | Harbour Porpoise | 4 | Just off the Ledges, PSM | Tom Felce |
| 28/05/2008 | 7 | 35 | Harbour Porpoise | 6 | Off Dalby Point | Brian B Maddrell |
| 28/05/2008 | 6 | 45 | Harbour Porpoise | 2 | Carrick Rock South 500m | Graham Hall |
| 19/05/2008 | 21 | 0 | Minke Whale | 1 | S of Niarbyl | Nina Shimmin |
| 19/05/2008 | 16 | 45 | Harbour Porpoise | 0 | 1000m off Dalby Point | Brian B Maddrell |
| 18/05/2008 | 16 | 30 | Risso's Dolphin | 1 | ~ 100 mtrs S of the "Gates" on Marine Drive, Douglas | Chris Tovell |
| 18/05/2008 | 14 | 40 | Harbour Porpoise | 2 | South of Kallow Point | Graham Hall |
| 17/05/2008 | 17 | 0 | Harbour Porpoise | 1 | 300m off Bradda mines | Fiona Gell |
| 17/05/2008 | 10 | 30 | Minke Whale | 1 | Douglas Bay towards Port Jack | Harry Eastham |
| 16/05/2008 | 21 | 45 | Harbour Porpoise | 2 | Off the Ledges at Port St Mary | Graham Hall |
| 16/05/2008 | 12 | 15 | Harbour Porpoise | 4 | Seen from the Ayres Visitor Centre | Tom Felce |
| 14/05/2008 | 20 | 35 | Risso's Dolphin | 2 | SE of Kallow Point | Graham Hall |
| 14/05/2008 | 20 | 35 | Harbour Porpoise | 2 | 500 SW of PSM Breakwater | Graham Hall |
| 13/05/2008 | 14 | 20 | Risso's Dolphin | 2 | SSE of Kallow Point | Graham Hall |
| 12/05/2008 | 15 | 25 | Harbour Porpoise | 1 | In the Sound, just south of Kitterland | Tom Felce |
| 11/05/2008 | 18 | 10 | Harbour Porpoise | 2 | Langness - 300m in Castletown Bay | Steve Wright |
| 11/05/2008 | 18 | 10 | Harbour Porpoise | 1 | 300m NW of the Point of Ayre | John & Lorraine Donnelly |
| 11/05/2008 | 17 | 40 | Harbour Porpoise | 2 | Scarlett - Seen heading into Castletown bay | Steve Wright |
| 11/05/2008 | 17 | 20 | Harbour Porpoise | 3 | Scarlett - 300m south | Steve Wright |
| 11/05/2008 | 17 | 20 | Minke Whale | 1 | About 1.5 miles straight off Laxey bay. | Matthew Lamberton |
| 11/05/2008 | 14 | 10 | Harbour Porpoise | 2 | 150m S of Kallow Pt | Graham and Jackie Hall |
| 11/05/2008 | 11 | 45 | Harbour Porpoise | 2 | South of Kallow Point | Graham and Jackie Hall |
| 11/05/2008 | 11 | 30 | Risso's Dolphin | 1 | Middle of Douglas bay, seen from Onchan Head | Yvonne Craig |
| 11/05/2008 | 11 | 5 | Risso's Dolphin | 1 | Marine Drive, Pigeon Stream, just off shore | Jan Quayle & Susie Cubbon |
| 11/05/2008 | 10 | 45 | Risso's Dolphin | 2 | Off the Arches, Marine Drive | Tom Felce |
| 11/05/2008 | 8 | 55 | Harbour Porpoise | 2 | Off Kallow Point, PSM | Graham Hall |
| 11/05/2008 | 7 | 30 | Risso's Dolphin | 1 | Off Marine Drive, 30 metres off cliff edge. | Nicola Cubbon |
| 11/05/2008 | 6 | 35 | Bottlenose Dolphin | 2 | Off Kallow Point, Port St Mary | Graham Hall |
| 10/05/2008 | 13 | 20 | Risso's Dolphin | 2 | Douglas Beach | Clair Ledsham |
| 10/05/2008 | 9 | 50 | Harbour Porpoise | 2 | Castletown Bay travelling E to W seawards of the Lleeah Rio | John Cringle |
| 09/05/2008 | 17 | 15 | Common Dolphin< |