Q 01/05

How many separate hearts pump the blue-green blood of a cuttlefish around its body?

A) One

B) Three

C) Six

D) Twelve

Answer · why

B) Three

Three hearts share the work: two push blood through the gills and one sends it around the rest of the body.

Q 02/05

Which reddish-brown color, linked with antique photographs, takes its name from the Greek word for cuttlefish?

A) Umber

B) Sienna

C) Sepia

D) Ochre

Answer · why

C) Sepia

Sepia began as a brown pigment taken from the ink sac of the cuttlefish, and artists drew with it until the 19th century.

Q 03/05

Thanks to their most famous talent, cuttlefish are sometimes nicknamed which reptiles of the sea?

A) Chameleons

B) Geckos

C) Iguanas

D) Rattlesnakes

Answer · why

A) Chameleons

Chameleons of the sea is the nickname, because cuttlefish can change skin color within a second to hide, signal one another or startle predators.

Q 04/05

Cuttlefish mothers coat their egg clusters in ink, making them look very much like which fruit?

A) Plums

B) Cherries

C) Olives

D) Grapes

Answer · why

D) Grapes

Grapes are what the inky clusters resemble, and each egg hatches into a miniature version of the adult.

Q 05/05

To test depth perception, scientists fitted cuttlefish with which tiny accessory before screening films of shrimp?

A) Contact lenses

B) 3D glasses

C) Eye patches

D) Swim goggles

Answer · why

B) 3D glasses

3D glasses with red and blue filters showed that cuttlefish judge distance with both eyes, striking at the place where the shrimp seemed to be.