This round we asked: Which species of animal would you take on board Noah's Ark?

Natalie Fung Chi-ying, 14, St Paul’s Co-educational College

They are white horses with long, spiralling, pointed horns. Unicorns, that is. They were the most mythical animals to be on board Noah's Ark. Or were they?

The myth of unicorns originated in Europe in the Middle Ages. They would be great mascots and help to integrate Christianity, Judaism and Islam. They are mentioned in all three religions.

Unicorns were said to be highly secretive creatures, with their horns having magical powers. They would be essential on Noah's Ark because they could cure a variety of diseases. They would be the Ark's "doctors".

Therefore, on the whole, unicorns would play a crucial role on board the vessel.

Nicholas Chu Weng-lam, 16, Sing Yin Secondary School

Today I have to go through a customs inspection before we can board Noah's Ark.

"Excuse me, sir. Do you have an animal partner with you?"

"Here is my lovely pet."

"Your pet looks furry! Can I pat it? Hang on a minute. Does it bite?"

"My Dada is docile and doesn't attack people. She is very choosy about food, though. Only bamboo can whet her appetite."

"Where did Dada's big eye patches come from?"

"Dada has had a black and white pattern from birth. Her distinctive fur pattern makes it a target of poachers, sadly."

"Aha, so that's why you're bringing her along?"

"Yup, plus the panda is the most adorable animal ever!"

Vivian Li Wan-yi, 16, Wa Ying College

The animal I would take on Noah's Ark is ... a piglet.

Some people may ask: why would you choose piglets? You might think that piglets are lazy and won't be useful to the world. It's rather the opposite. Piglets are actually very important to us.

Piglets do grow up. And when we have more pigs, some could be domesticated. Another reason is that piglets are said to be sociable and intelligent. They are certainly loveable in stories like Winnie-the-Pooh, Babe and Charlotte's Web. They are terrific animals!

Lastly, piglets are small, cute and harmless. The last thing we want on the Ark is an animal that can attack us or the other creatures.

Alex Chan, 16, La Salle College

Homo sapiens - all of us - fall into the category of mammals. So technically we are animals, too.

We are the smartest of all animals. We have mastered languages and technology, which will be quite important after the Flood. We will need to rebuild our civilisation. No other animal would be able to do that.

But the thing is that we are also the most destructive animals on the planet and selfish, too. We just like to take from Nature and do not give anything back.

It would be pretty sad if, in the new world, the only humans left were my family and I. With the addition of more humans, we could repopulate the Earth again. In the meantime, we could learn from our mistakes and make the planet a better place for all animals.

Joseph Ho, 16, Wah Yan College

If I had the right to save a member of one species, I would probably choose another human being.

The reason is that I would feel extremely bored with all those monkeys, reptiles and other animals on board and no one to speak to.

I would feel isolated if I didn't have a friend or partner. It would feel so great if I could be accompanied by a friendly and kind guy.

The Ark's journey would be long and tiring, but I could spend my time chatting with my friend and telling jokes. I believe it would be a totally different voyage if there was another human being on board besides the animals.

Thomas Lee Ka-chun, 16, Sing Yin Secondary School

I would take a tortoise to Noah's Ark because the animal has a special significance.

Tortoises have a long life span. It's a blessing to have a species that can remind us that we must endure and survive before we find land.

The presence of a tortoise would be very inspiring for everyone on the Ark.

The animal's hard shell has its symbolic meaning, too. It helps protect the tortoise. It symbolises the determination we need to survive sticky situations. We should be brave and optimistic to overcome challenges and find new land on Earth.