18/06/2017 Newsround

Hi guys, Ricky here with the big stories for you this Sunny Sunday.

Coming up: The real life tiny dragons.

First up, many have you will woken up early this morning to write cards

or even make breakfast for your dad because it's Father's Day!

So we want to know today what makes your Dad special

to you and tell us what you have got planned to celebrate Dad's Day?

And around half a billion cricket fans will tune in to watch India

take on rivals Pakistan in the Champions Trophy Final this

afternoon which is taking place at the Oval in London.

Tickets for the game are mega hard to come by,

but even people watching on TV are getting in the party mood.

It's called an armyworm, and while it might look

like something you'd see in your garden, they're a much more

serious type of pest, as Jenny's been finding out.

Called fall armyworms, but they aren't worms at all,

Despite their size they have been causing massive problems

They feed on a range of different crops, but in particular

on maize and sweetcorn, this is a very important crop

in Africa because many farmers rely on maize to feed their families

and to crush the corn to make maize flour,

They have come to Africa from the Americas, and their numbers

are growing very fast, with females laying

The pests started having an impact in West Africa

at the end of last year, but since, they've spread.

Scientists are warning that parts of southern Africa,

already hit by drought, are now facing another food crisis.

Well, the usual method of controlling any insect pest

The downside is that they can also have a negative

Not only do they kill the target pest insect,

in this case the fall armyworm, but you may also kill beneficial

insects like pollinators and predators who would normally

Another idea is to use the diseases that the worms are harmed

by and spray them onto the plants, getting rid of fall armyworms

In some small farms farmers have been able to pick the army worms off

In some small farms farmers have been able to pick the armyworms off

crops with their hands, but with the number of armyworms

continuing to grow, scientists will have to find a solution fast

to stop these pests from spreading even further.

Next, to Australia, where scientists are trying to save a unique animal

There are worries the creatures are now endangered.

Not far off the coast of Sydney in Australia is what's known

People diving here will find strange and beautiful creatures living

The locals call these guys weedies, otherwise known

Native to the coast around Australia, they are related to sea

horses and spend their time drifting in the water, blending

The problem is these colourful creatures are becoming

harder and harder to spot, and not just because

This is the best site in Sydney so you can

still see them here reliably, other sites, particularly

on the north side of Sydney, where they used to be a common

occurrence, now you are likely to find one and sometimes

Marine biologists have come up with a clever plan to work out how

They are asking divers to snap a picture of

The researchers are then using a kind of facial recognition

software to identify each fish's unique patterns.

Every time they identify a new weedy they give it a name

to help keep track of it, kind of like Facebook for weedies.

It will tell us if it is David or Greg or Alicia because every

single new sea dragon we have gets a name and then we can

Weedy sea dragons are classified as near-threatened,

but the scientists reckon this research could provide enough info

to have them relisted as endangered, which is more serious.

Scientists believe climate change could be a big part

They say rising sea temperatures are killing the seaweed

Once we lose them we will never get them back.

They were here hundreds of thousands of years ago but with our impact,

So if you find yourself diving in Australia,

snap a picture to make sure there are plenty of little weedies

Sorry for the small technical problem there.

Next up, it's one of the most famous parts of any rugby match

against New Zealand, the traditional Haka war dance.

Usually it's scary enough facing 15 rugby players doing it,

but imagine seeing more than 7,000 people take up the challenge!

This is a new world record, which was achieved before

the British and Irish Lions took on the Maori All-Blacks yesterday.

They had to perform for five minutes to break the record.

It wasn't just locals taking part though, a number of Lions'

That's all from me, Newsround's back at 2.15pm.