WHALE AND DOLPHIN DISCOVERY QUIZ
Cetaceans can keep their body warm in the water by means of... (amongst other reasons)
A thick layer of fatty tissue under the skin, called blubber
Hanging around hydrothermal vents
A very thick epidermis (skin) layer
Generating heat in their melon
The melon in Odontocetes plays a crucial role in:
Hormone production
Focusing and amplifying the sounds used for echolocation
Fat storage for migrations
Mating
Which of these is true?
Cetaceans evolved from land mammals
The ancestors of cetaceans always inhabited the sea
Cetaceans evolved from a now extinct warm-blooded fish
Baleen whales (Mysticeti) evolved from an ancient form of reptile
What is this?
Some sand and pebbles
I don't know but it looks a bit yuck
A parasite infestation
The callosity of a right whale, covered in cyamids, a type of crustacean
Where do dolphins receive sound and the echoes from their clicks before going into the inner ear?
Blowhole
Ears
Melon
Lower jaw
Cetaceans originally evolved from land mammals. What is the reason why they have almost completely lost their body hair?
Fur causes them to lose heat when it's wet
Life in the ocean is so stressful - I'd lose my hear too
To increase streamlining
To improve camouflage
The record for the (known) deepest dive goes to...
Blue whale
Sperm whale
Cuvier's beaked whale
Risso's dolphin
Out of the ~94 cetacean species living in the world today, how many are found in Aotearoa NZ?
About 47
About 28
About 22
About 60
What species of cetacean is this?
White-sided dolphin
Hourglass dolphin
Southern right whale dolphin
That doesn't look like a real dolphin
True or False: Baleen whales (Mysticeti) use echolocation just like toothed whales (Odontoceti) do
True
False
'Cetacean' is the name given to the Order including whales, dolphins and porpoises. The name is derived from the Greek word 'ketos' which means...
Serpent
Dragon
Sea monster
Flute
Which species of cetacean is found only in Aotearoa NZ?
Spinner dolphin
Hector's dolphin
Bryde's whale
Dusky dolphin
Which of the following is not a cetacean?
Beluga
Tucuxi
Dugong
Vaquita
Some cetaceans, like sperm whales and killer whales, learn behaviours and dialects from each other. This means that...
Their genes pass on learnt behaviours
They have culture (social learning)
They go to school
Personal experience is their main way of learning
One of the many adaptations marine mammals have for making long dives is…
An extra lung
Lots of blood
Cutaneous respiration
Very small oxygen requirements
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