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Dugong - Quiz
Contributed by: Newman
  • 1. What is the scientific name of a dugong?
A) Dugong marineus
B) Dugong waterus
C) Dugong aquaticus
D) Dugong dugon
  • 2. Which ocean is the primary habitat of dugongs?
A) Atlantic Ocean
B) Pacific Ocean
C) Indian Ocean
D) Arctic Ocean
  • 3. What is the diet of a dugong primarily composed of?
A) Algae
B) Plankton
C) Seagrass
D) Fish
  • 4. Which of the following is NOT a characteristic of dugongs?
A) Sharp teeth
B) Large flippers
C) “V”-shaped tail
D) Whiskers
  • 5. Which of the following countries is known to have a significant population of dugongs?
A) Russia
B) Japan
C) Australia
D) Brazil
  • 6. How many calves does a dugong usually give birth to at a time?
A) 2
B) 3
C) 1
D) 4
  • 7. What is the conservation status of dugongs according to the IUCN Red List?
A) Critically Endangered
B) Least Concern
C) Vulnerable
D) Endangered
  • 8. How do dugongs communicate?
A) Sign language
B) Visual displays
C) Telepathy
D) Vocalizations
  • 9. How long can dugongs hold their breath underwater?
A) 2 minutes
B) 30 minutes
C) 6 minutes
D) 1 hour
  • 10. Which order do dugongs belong to?
A) Pinnipedia
B) Artiodactyla
C) Cetacea
D) Sirenia
  • 11. How many living species are there in the order Sirenia?
A) Five
B) Six
C) Three
D) Four
  • 12. What is the closest modern relative of the dugong?
A) Steller's sea cow
B) West Indian manatee
C) Amazonian manatee
D) African manatee
  • 13. In which century was Steller's sea cow hunted to extinction?
A) 17th century
B) 19th century
C) 16th century
D) 18th century
  • 14. Where are the largest concentrations of dugongs typically found?
A) Wide, shallow, protected areas like bays and mangrove channels
B) Open ocean
C) Cold-water regions
D) Deep-sea trenches
  • 15. How long can dugongs live?
A) 30 years
B) 40 years
C) 70 years or more
D) 50 years
  • 16. Which convention limits or bans the trade of derived products from dugongs?
A) Convention on International Trade in Endangered Species
B) Marine Conservation Society
C) Greenpeace
D) World Wildlife Fund
  • 17. What are the main causes of population decline for dugongs?
A) Predation by sharks
B) Fishing-related fatalities, habitat degradation, and hunting
C) Climate change only
D) Pollution only
  • 18. What is the rate of reproduction for dugongs?
A) Fast
B) Moderate
C) Rapid
D) Slow
  • 19. From which language does the word 'dugong' derive?
A) French
B) Malay
C) Visayan (probably Cebuano)
D) English
  • 20. Who first adopted and popularized the name 'dugon' in 1765?
A) John James Audubon
B) Charles Darwin
C) Carl Linnaeus
D) Georges-Louis Leclerc, Comte de Buffon
  • 21. What is the Proto-Malayo-Polynesian root of 'dugong'?
A) *duyuŋ
B) *elephānt
C) *sirenia
D) *manatē
  • 22. What is the local name for dugongs among the Wunambal people?
A) Sea lady
B) Duyung
C) Balguja
D) Ocean beast
  • 23. Which family does Dugong dugon belong to?
A) Dugongidae
B) Manatee
C) Elephantidae
D) Hyracoidea
  • 24. Which scientist assigned the type species of Dugong?
A) Linnaeus
B) Gray
C) Lacépède
D) Müller
  • 25. Who classified dugongs within their own family?
A) Gray
B) Linnaeus
C) Müller
D) Lacépède
  • 26. To which group are dugongs more closely related?
A) Whales
B) Dolphins
C) Seals
D) Elephants
  • 27. When did sirenians first appear according to the fossil record?
A) Pliocene
B) Cretaceous
C) Eocene
D) Miocene
  • 28. When are the two extant families of sirenians thought to have diverged?
A) Mid-Eocene
B) Early Pliocene
C) Late Eocene
D) Late Miocene
  • 29. What type of studies have been conducted on dugong populations?
A) Ecological studies
B) Behavioral studies
C) Molecular studies using mitochondrial DNA
D) Genetic studies using nuclear DNA
  • 30. Which dugong population is distinct from others according to molecular studies?
A) Southeast Asia
B) Africa
C) Arabia
D) Australia
  • 31. How many distinct maternal lineages do Australian dugongs have?
A) Three
B) Two
C) One
D) Four
  • 32. Where has limited genetic mixing occurred between dugong populations?
A) In the Indian Ocean
B) Around Timor
C) In the Mediterranean Sea
D) Off the coast of Australia
  • 33. What is the typical maximum length of an adult dugong?
A) 2.5 metres (8.2 ft)
B) 5 metres (16.4 ft)
C) 4 metres (13 ft)
D) 3 metres (10 ft)
  • 34. What is the color of a dugong's skin at birth?
A) Brownish-to-dark-grey
B) Pale cream colour
C) Black
D) Dark grey
  • 35. What shape does a dugong's upper lip form?
A) Triangular
B) Horseshoe-shaped
C) Rectangular
D) Circular
  • 36. What condition do sirenians, including dugongs, experience that makes their bones unusually solid?
A) Osteoporosis
B) Arthritis
C) Pachyostosis
D) Rickets
  • 37. What is the primary function of the heavy bones in dugongs?
A) To provide strength for digging in the seabed
B) To aid in rapid swimming
C) To store energy
D) To act as ballast to help keep them suspended slightly below the water's surface
  • 38. What is the estimated length of coastline where dugongs can be found?
A) 50,000 kilometres (31,000 mi)
B) 200,000 kilometres (124,000 mi)
C) 140,000 kilometres (87,000 mi)
D) 100,000 kilometres (62,000 mi)
  • 39. How many countries and territories have populations of dugongs?
A) 50
B) 25
C) 37
D) 45
  • 40. What is the estimated worldwide decline in dugong population over the last 90 years?
A) 40 percent
B) 20 percent
C) 10 percent
D) 30 percent
  • 41. In Australia, which bay has a stable population of over 10,000 dugongs?
A) Hervey Bay
B) Shark Bay
C) Gulf of Carpentaria
D) Moreton Bay
  • 42. Which Australian bay is the southernmost significant habitat for dugongs?
A) Hervey Bay
B) Moreton Bay
C) Torres Strait
D) Shark Bay
  • 43. What is the estimated population of dugongs in the Gulf of Carpentaria?
A) 5,000
B) 10,000
C) Over 20,000
D) 30,000
  • 44. Which area provides important feeding grounds for dugongs in Australia?
A) Great Barrier Reef
B) Torres Strait
C) Shark Bay
D) Hervey Bay
  • 45. By what percentage did the dugong population drop in the Persian Gulf since 1950?
A) Nearly 25%
B) 50%
C) 10%
D) 5%
  • 46. Which island is home to the largest remaining dugong population in East Africa?
A) Bazaruto Island
B) Inhaca Island
C) Mayotte
D) Madagascar
  • 47. What event occurred in 2009 around Mafia Island Marine Park that affected dugongs?
A) Discovery of new population
B) A failed hunt by fishermen
C) Extinction declaration
D) Establishment of a marine sanctuary
  • 48. Where was the first 'Dugong Festival' held in Vietnam?
A) Con Dao Island
B) Hainan Island
C) Guangxi
D) Phu Quoc Island
  • 49. What is the status of dugongs in Chinese waters as reported in 2022?
A) Stable population
B) Increasing in number
C) Functionally extinct
D) Protected within a sanctuary
  • 50. What is the biggest threat to dugongs in the Philippines according to recent reports?
A) Overpopulation
B) Habitat destruction of seagrass meadows
C) Fishing gear accidents
D) Local marine trash problem
  • 51. Where was the first documented sighting of a dugong in Sarangani Bay?
A) July 2024
B) 2014
C) 2009
D) 1980s
  • 52. What is the status of dugong populations in Mozambique's Maputo Bay and Inhaca Island?
A) They have become rare
B) Increasing in number
C) Protected within a sanctuary
D) They are thriving
  • 53. What is the genetic status of the East African dugong population compared to those in the Red Sea and Madagascar?
A) Identical
B) Genetically distinct
C) Closely related
D) Intermediate
  • 54. Which area in Vietnam is known for regularly seeing dugongs?
A) Guangxi
B) Con Dao Island within Côn Đảo National Park
C) Phu Quoc Island
D) Hainan Island
  • 55. Which islands once provided habitats for sizeable herds of dugongs but now only have isolated populations?
A) The Philippines
B) Mayotte
C) Inhaca Island
D) Madagascar
  • 56. What is the status of dugong populations around the Solomon Islands and New Caledonia?
A) Populations exist
B) Protected within a sanctuary
C) Increasing in number
D) Extinct
  • 57. What is the status of the dugong population around Palau?
A) Highly isolated population
B) Large and stable population
C) Protected within a sanctuary
D) Extinct
  • 58. In what year were new sightings of a cow and calf reported around Okinawa?
A) 2025
B) 2017
C) 1996
D) 1985
  • 59. Where was a single dugong recorded at the northernmost edge of its historic range more than 40 years after the last sighting?
A) Amami Ōshima
B) Northern Mariana Islands
C) Kenting National Park
D) Dongsha Atoll
  • 60. When was the first sighting of a live dugong in Taiwan waters in over 88 years?
A) March 2025
B) 1985
C) 1950s
D) 2017
  • 61. Where did dugongs once inhabit until after the rise of civilizations along the inland sea?
A) The Red Sea
B) The Mediterranean
C) The Caribbean Sea
D) The Pacific Ocean
  • 62. What do dugongs ingest when they eat seagrass?
A) Only the stems of the seagrass.
B) Only the leaves of the seagrass.
C) The whole plant, including the roots.
D) Only the flowers of the seagrass.
  • 63. What is the term for the behavior where dugongs favor the growth of certain seagrasses?
A) Herbivorous grazing.
B) Nutrient optimization.
C) Selective feeding.
D) Cultivation grazing.
  • 64. What mating behavior involves males defending a territory and impressing females?
A) Monogamy
B) Polygyny
C) Lekking
D) Solitary mating
  • 65. How long do dugong calves typically nurse from their mothers?
A) 24 months
B) 6 months
C) 30 days
D) 14–18 months
  • 66. What additional food does a dugong calf begin to eat soon after birth?
A) Plankton
B) Seagrasses
C) Crustaceans
D) Fish
  • 67. Where was a 5,000-year-old wall painting of a dugong discovered?
A) Tambun Cave, Ipoh, Malaysia
B) Great Wall of China
C) Pyramids of Egypt
D) Stonehenge
  • 68. How were dugongs traditionally hunted in Palau?
A) By shooting with bows and arrows
B) With heavy spears from canoes
C) By using harpoons
D) Using nets and traps
  • 69. What is the maximum annual adult mortality rate that allows a dugong population to remain stable?
A) 5%
B) 20%
C) 15%
D) 10%
  • 70. Which country banned all hunting of dugongs within its waters and also banned drift net fishing?
A) India
B) United Arab Emirates
C) Japan
D) Philippines
  • 71. In which year did Indonesia list dugongs as a protected species?
A) 2005
B) 1999
C) 2010
D) 2018
  • 72. What action did the World Wide Fund for Nature take in northern Queensland to protect dugongs?
A) Implemented a conservation plan
B) Established new marine parks
C) Banned all fishing activities
D) Purchased gillnet licences
  • 73. Which country's Fisheries Ministry began implementing a dugong conservation plan in 2018?
A) Tanzania
B) Kenya
C) Indonesia
D) Vietnam
  • 74. In which Australian state are dugongs listed as vulnerable under the Nature Conservation Act?
A) Queensland
B) Victoria
C) Western Australia
D) New South Wales
  • 75. Which country has legislation protecting dugongs since 1955, but enforcement is lacking?
A) Mozambique
B) Philippines
C) Kenya
D) Japan
  • 76. Which country has a National Action Plan for dugongs implemented within the Mayotte Marine Natural Park?
A) Australia
B) India
C) France
D) Japan
  • 77. Which country's coast has marine parks established to protect dugongs in the Red Sea?
A) Australian coast
B) European coast
C) South American coast
D) African coast
  • 78. What has replaced shark nets in most areas to reduce dugong fatalities?
A) Underwater drones
B) Baited hooks
C) Acoustic deterrents
D) Electric barriers
  • 79. What is an unknown effect related to dugongs accumulating heavy metal ions in their tissues?
A) They lose their ability to reproduce
B) Their lifespan decreases significantly
C) They become more aggressive
D) The effects are unknown
  • 80. What socio-political issue impedes dugong conservation in many developing countries?
A) Socio-political needs
B) Technological limitations
C) Insufficient funding for research
D) Lack of public awareness
  • 81. Which human activity does not negatively affect seagrass meadows?
A) Dredging
B) Trawling
C) Bird watching
D) Mining
  • 82. How long can Halophila ovalis survive without light?
A) Dying completely after 30 days
B) Living for a week without light
C) Surviving indefinitely with reduced growth
D) Thriving for up to 60 days
  • 83. What activity was conducted in August 2014 around the seagrass beds in Oura Bay?
A) Preliminary drilling surveys
B) Seaweed harvesting
C) Marine wildlife census
D) Coral transplantation
  • 84. Where is a male dugong kept that has resided there since he was a juvenile?
A) Toba Aquarium
B) Sydney Aquarium
C) Underwater World, Singapore
D) Sea World Indonesia
  • 85. How old was Gracie when she died at Underwater World, Singapore?
A) 30
B) 19
C) 15
D) 25
  • 86. When did the second dugong at Sydney Aquarium die?
A) 2018
B) 2011
C) 2014
D) 2020
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