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Gef the talking mongoose: the Dalby Spook of Cashen's Gap
September 1931 · Doarlish Cashen (Cashen's Gap), Dalby Mountain, near Dalby, Isle of Man
Isle of Man
Paranormal · Being / humanoid · 51 sources · 8 photos
49Partially documented
Francis Chichester's Airship over the Tasman Sea
June 6, 1931 · Tasman Sea, off the coast of New South Wales, between Lord Howe Island and Jervis Bay (estimated about 80 miles east of Sydney)
International waters
UAP · Cigar · 12 sources
15Thinly documented
The Glacier Island "Monster in the Ice", Prince William Sound, Alaska
November 10, 1930 · Eagle Bay, Glacier Island, Prince William Sound, Alaska
United States
Cryptid · Creature · 26 sources · 10 photos
48Partially documented
Two sea serpents off Cayuga Lake's eastern shore (Old Greeny), 1929
c. 1929 · Eastern shore of Cayuga Lake, Finger Lakes region, New York
United States
Cryptid · Creature · 14 sources
16Thinly documented
The Moore's Beach Sea Monster Carcass, Santa Cruz (1925)
c. 1925 · Moore's Beach (now Natural Bridges State Beach), Santa Cruz, California
United States
Cryptid · Creature · 20 sources · 5 photos
49Partially documented
The SS Watertown Phantom Faces
c. 1924 · Pacific Ocean, off the Pacific coast of Mexico (aboard the tanker SS Watertown)
Paranormal · Being / humanoid · 27 sources · 2 photos
21Thinly documented
Trunko, the Margate "polar bear" sea monster
c. 1924 · Margate beach, Natal (now KwaZulu-Natal)
South Africa
Cryptid · Creature · 41 sources · 6 photos
27Thinly documented
The Walgren Lake Monster: Alkali Lake, Hay Springs, Nebraska
September 16, 1921 · Alkali Lake (now Walgren Lake), near Hay Springs, Sheridan County, Nebraska
United States
Cryptid · Creature · 21 sources
22Thinly documented
Ralph Bandini's Clemente Monster Sighting off San Clemente Island (1920)
September 1920 · Off Mosquito Harbor and White Rock, east side of San Clemente Island, California
United States
Cryptid · Creature · 19 sources
15Thinly documented
UB-85's sea monster, North Channel (1918)
c. 1918 · North Channel, off the Rhins of Galloway near Portpatrick and Stranraer, Scotland
United Kingdom
Cryptid · Creature · 32 sources
23Thinly documented
The Port Stephens Giant White Shark off Broughton Island
January 1918 · Crayfish grounds near Broughton Island, off Port Stephens, New South Wales
Australia
Cryptid · Creature · 11 sources
18Thinly documented
HMS Hilary and the Sea Serpent Used for Gunnery Practice
c. 1917 · About seventy miles south-east of Iceland, North Atlantic
International waters
Cryptid · Creature · 15 sources
21Thinly documented
The U-28 'Undersea Crocodile' and the Sinking of the SS Iberian
July 30, 1915 · Celtic Sea, about 9 nautical miles southwest of Fastnet Rock, off County Cork, Ireland
Ireland
Cryptid · Creature · 22 sources
22Thinly documented
The Goligher Circle, Belfast
1915 · Goligher family home, Ormeau Road, Belfast
United Kingdom
Paranormal · Other · 27 sources · 1 photos
40Partially documented
1914 South African "Phantom Monoplane" Wave and the Greytown, Natal Landing Report
August 11, 1914 · Union of South Africa (Cape Town, Vryburg, Pretoria, Natal); landing report near Greytown, Natal (now KwaZulu-Natal)
South Africa
UAP · Other · 15 sources
26Thinly documented
The Dimboola sea serpent in the Great Australian Bight
May 14, 1913 · Great Australian Bight, off South Australia, on the voyage from Adelaide to Fremantle (35°30′S 133°40′E)
Australia
Cryptid · Creature · 10 sources
20Thinly documented
The Cooneen Poltergeist: the Murphy farmhouse haunting, County Fermanagh (1913)
c. 1913 · Murphy farmhouse, Cornarooslan townland, Cooneen, near Brookeborough, County Fermanagh
United Kingdom
Paranormal · Other · 34 sources
21Thinly documented
The Sheerness Phantom Zeppelin (The Sheerness Incident)
October 14, 1912 · Sheerness, Isle of Sheppey, Kent
United Kingdom
UAP · Unknown · 20 sources
38Partially documented
The British Phantom Airship ("Scareship") Wave of 1909
March 23, 1909 · England, Wales and Ireland (Peterborough, East Anglia, Birmingham, Cardiff and Caerphilly, Belfast, Kingstown)
United Kingdom
UAP · Cigar · 36 sources
48Partially documented
The Valhalla Sea Serpent off Brazil (1905)
December 7, 1905 · Off Paraíba, northeast coast of Brazil (7° 14' S, 34° 25' W)
Brazil
Cryptid · Creature · 20 sources
28Thinly documented
  • Central Intelligence Agency· 201 pages· 74 pages mention it
    • p. 16 …European NATO and the Warsaw Pact Figure 1 ,'- - "''i 'Fr,~'""' NNA TO countries Benes Sea Warsaw Pact countries Norwegian . t…
    • p. 72 …PO A ; re -t { - Black Sea Fleet ROMANI A -UGM (Dsevastopo - BUGRAFleet Caspian headquarters Black Sea -Sea 77629 1-79…
  • Central Intelligence Agency· 1992-02-11· 2 pages· 2 pages mention it
    • p. 1 …RADAR INDICATED AN INTRUDING PLANE IN THE WEST SEA AIRSPACE AT 10:05, BUT FIGHTERS SENT UP TO INVESTIGATE FOUND…
    • p. 2 …RADAR WHEN AN AIRPLANE CRASHES, WE ARE SEARCHING THE SEA WHERE THE OBJECT WAS LAST DETECTED ON RADAR, BUT SO…
  • Department of Transportation. Federal Aviation Administration.· 2023· 1 pages· 1 page mentions it
    • p. 1 …JAZZ 653 LATER REPORTED SAME UAP MOVING NORTH BOUND 13 ENE SEA. NO EVASIVE ACTION REPORTED. LEO NOTIFICATION NOT REPORTED…
  • Department of Transportation. Federal Aviation Administration.· 2023· 1 pages· 1 page mentions it
    • p. 1 …SEATTLE, WA/UFO-UAP ACTIVITY/1635P/SEATTLE ARTCC ADVISED ALASKA 688, B739, SEA - LAS, REPORTED A DARK OBJECT DESCRIBED AS…
  • All-domain Anomaly Resolution Office· 2 pages· 1 page mentions it
    • p. 1 …Middle East and the Mediterranean Sea (U) Date: 2022 and 2023 (U) Altitude: N/A (U) Shape: N/A (U…
  • Department of Transportation. Federal Aviation Administration.· 2023· 1 pages· 1 page mentions it
    • p. 1 …The unknown phenomenon was described as a sea of flashing white lights below their altitude. The lights were not very…

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