Jarus Raini and Spider Species

The video discusses the vast diversity of invertebrates, particularly spiders, with around 50,000 known species and potentially many more undiscovered. It highlights Jarus Raini, a large sea scorpion, as a top predator of its time. The video also speculates on the existence of undiscovered large arachnids, suggesting that there may be impressive species yet to be found.

What is the estimated number of known spider species?

• 500,000

• 100,000

• 50,000

• 10,000

How many more spider species are believed to be undiscovered compared to the known ones?

• Five times as many

• Twice as many

• Ten times as many

• Twenty times as many

What was Jarus Raini?

• A giant spider

• A large dinosaur

• A prehistoric sea scorpion

• A massive fish

What did Jarus Raini primarily prey on?

• Small insects

• Large fish, including its own kind

• Birds

• Mammals

What is the speaker's opinion on the possibility of undiscovered large arachnids?

• They are all known to science

• There might be impressive ones yet to be found

• They are definitely extinct

• They are unlikely to exist

What does the speaker hope to find for their empty tanks at home?

• A large crocodile

• A 6ft spider

• A giant scorpion

• A prehistoric fish