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- 1. Multiple Choice
What depth of water does the sea otter prefer?
Shallow
Deep
- 2. Multiple Choice
How do sea otters contribute to the ecosystem?
Control Herbivorous Invertebrates
Prevent Overgrazing of Kelp
Increase Marine Diversity
Improve Water Quality
- 3. Multiple Choice
What continents do sea otters inhabit?
Asia
North America
Oceania
South America
- 4. Multiple Choice
What ocean does the sea otter inhabit?
Pacific
Atlantic
Indian
Arctic
- 5. Multiple Choice
Sea otters are sexually dimorphic.
True, males are larger.
True, females are larger.
False.
- 6. Multiple Choice
How long is a sea otter's tail compared to its body?
1x
2x
1/2x
1/3x
- 7. Multiple Choice
Sea otter pups can start diving at what age?
Birth
2 Weeks
2 Months
1 Year
- 8. Multiple Choice
How deep can sea otters dive?
45 m. / 148 ft.
35 m. / 115 ft.
25 m. / 82 ft.
15 m. / 49 ft.
- 9. Multiple Choice
How much fat is sea otter milk?
20-25%
10-15%
30-35%
40-45%
- 10. Multiple Choice
When are sea otter pups weaned?
6 Months
1 Year
1 Month
3 Months
- 11. Multiple Choice
Which sex of sea otter receives face scars from mating?
Male
Female
Both, Male & Female
- 12. Multiple Choice
What is the sea otter's mating system?
Polygyny
Monogamy
Polyandry
Polygynandry
- 13. Multiple Choice
How many vocalizations do sea otters have?
3
6
9
12
- 14. Multiple Choice
A sea otter's scent can deliver what information?
Identity
Age
Sex
Diet
- 15. Multiple Choice
Why do sea otters wrap themselves in kelp?
Prevent Drifting Away
Regulate Body Temperature
Keep Afloat
Deter Predators
- 16. Multiple Choice
When do sea otters rest on land?
Stormy Weather
High Population Density
Sleeping
Eating
- 17. Multiple Choice
Sea otters reuse their tools.
True
False
- 18. Multiple Choice
Sea otters are one of the few mammals that exhibit tool use.
True
False
- 19. Multiple Choice
How does the sea otter use tools?
Breaks Prey with Rocks
Covers Face with Sponges
Picks Crevices with Sticks
Exfoliates with Tree Bark
- 20. Multiple Choice
How many subspecies of sea otter are recognized?
0
2
3
5
- 21. Multiple Choice
What is the largest subspecies of sea otter?
Asian
Northern
Southern
Western
- 22. Multiple Choice
What is the sea otter's social system?
Social
Solitary
Social Males, Solitary Females
Solitary Males, Social Females
- 23. Multiple Choice
What is a group of sea otters called?
Bevy
Raft
Romp
Colony
- 24. Multiple Choice
Which sex of sea otters steals food from the other?
Male
Female
- 25. Multiple Choice
How fast can a sea otter swim underwater?
9 kph / 6 mph
3 kph / 2 mph
6 kph / 4 mph
12 kph / 7.5 mph
- 26. Multiple Choice
How does a sea otter swim?
Vertical Undulation
Horizontal Undulation
Vertical Oscillation
Horizontal Oscillation
- 27. Multiple Choice
To how many offspring does a female sea otter typically give birth?
1
2
3
5
- 28. Multiple Choice
When is the sea otter breeding season?
Year-Round
May-June
January-March
August-October
- 29. Multiple Choice
Sea otter fur is the densest of all mammals.
True
False
- 30. Multiple Choice
How many layers does sea otter fur have?
1
2
3
5
- 31. Multiple Choice
Which sex of sea otter reaches sexual maturity first?
Male
Female
- 32. Multiple Choice
How do sea otters defend their territories?
Splashing
Vocal Displays
Raising Body Out of Water
Kelp Perimeter
- 33. Multiple Choice
What percentage of their body weight do sea otters consume daily?
10-15%
20-25%
30-35%
40-45%
- 34. Multiple Choice
Sea otter individuals tend to have what type of diet?
General
Specialized
- 35. Multiple Choice
Which is the smallest sea otter subspecies?
Asian
Northern
Southern
Western
- 36. Multiple Choice
How does the Asian sea otter differ from other subspecies?
Wider Skull
Longer Nasal Bones
Shorter
Smaller Teeth
- 37. Multiple Choice
What is the sea otter's diet?
Carnivorous
Herbivorous
Omnivorous
Unknown
- 38. Multiple Choice
Sea otters are the only carnivores with how many lower incisors?
2
4
6
8
- 39. Multiple Choice
What is a sea otter's den called?
Holt
Couch
Bevy
Lounge
- 40. Multiple Choice
Sea otter home range size varies by sex.
True, males' are larger.
True, females' are larger.
False
- 41. Multiple Choice
Why was sea otter fur coveted?
Density
Insulating Quality
Color
Softness
- 42. Multiple Choice
When was sea otter hunting banned?
1911
1972
1925
2011
- 43. Multiple Choice
What is the sea otter's evaluation on the IUCN Red List of Threatened Species?
Endangered
Critically Endangered
Extinct in the Wild
Vulnerable
- 44. Multiple Choice
What is the sea otter's greatest threat?
Oil Spills
Hunting
Invasive Species
Climate Change
- 45. Multiple Choice
What is the sea otter's lifespan in the wild?
23 Years
13 Years
33 Years
43 Years
- 46. Multiple Choice
Where do sea otters store their tools and food?
Under Forearms
Under Chin
Between Hind Feet
Entwined in Belly Fur
- 47. Multiple Choice
What is the sea otter's parental care?
Maternal
Paternal
Both, Maternal & Paternal
None
- 48. Multiple Choice
How long is a young sea otter dependent on its mother?
6-8 Weeks
6-8 Months
1 Year
6-8 Days
- 49. Multiple Choice
What is the sea otter's circadian rhythm?
Diurnal
Crepuscular
Cathemeral
Nocturnal
- 50. Multiple Choice
How long can a sea otter remain submerged?
3 Minutes
6 Minutes
30 Minutes
16 Minutes
- 51. Multiple Choice
The feces of which animals are threatening sea otters?
Domestic Cat
Opossum
Domestic Dog
Rabbit
- 52. Multiple Choice
What is the maximum fine for harming a sea otter?
$2,500
$25,000
$250,000
$250
- 53. Multiple Choice
Sea otters have retractable claws.
True
False
- 54. Multiple Choice
What purpose does the sea otter's whiskers serve?
Find Food
Detect Water Currents
Assist Swimming
Insulate Body Temperature
- 55. Multiple Choice
Twins occur in how many sea otter births?
2%
12%
22%
42%
- 56. Multiple Choice
How many offspring can a sea otter raise successfully each year?
1
2
3
5
- 57. Multiple Choice
What advantage does delayed implantation offer the sea otter?
Birth During Favorable Conditions
Multiple Births per Year
Caudal Fetus Orientation
Larger Genetic Diversity
- 58. Multiple Choice
What is the sea otter's population trend?
Increasing
Decreasing
Stable
Unknown
- 59. Multiple Choice
What limits the sea otter's northern range?
Sea Ice
Killer Whales
Giant Kelp
Temperature
- 60. Multiple Choice
What limits the sea otter's southern range?
Giant Kelp
Temperature
Great White Sharks
Sea Ice
- 61. Multiple Choice
How many mammae does a female sea otter have?
8
2
4
6
- 62. Multiple Choice
What marine habitats do sea otters inhabit?
Neritic
Oceanic
Intertidal
Coastal/Supratidal
- 63. Multiple Choice
What preys on sea otters?
Great White Sharks
Coyotes
Bald Eagles
Killer Whales
- 64. Multiple Choice
Which of these is a sea otter?
- 65. Multiple Choice
Which of these are sea otter tracks?
- 66. Multiple Choice
Which of these is a sea otter?
- 67. Multiple Choice
What system does the sea otter inhabit?
Terrestrial
Aquatic
Aerial/Arboreal
Fossorial
- 68. Multiple Choice
What is the sea otter's form of locomotion?
Other
Unguligrade
Digitigrade
Plantigrade
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