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

WHALE AND DOLPHIN DISCOVERY QUIZ

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