Ellie Simmonds - four Paralympic gold medals already and she's only 21 - into the pool next.

She finishes second in her S6 50m freestyle heat in 36.44 seconds, well behind winner Yelyzaveta Mereshko of Ulraine who clocked 33.56.

Next up is 15-year-old Ellie Robinson, who didn't get long to celebrate last night's gold medal...

Confirmation that Sascha Kindred didn't make the final of the S6 men's 50m freestyle. 

The six-time Paralympic gold medallist tells Channel 4 his main focus is the 200m individual medley, which has its heats and final on Monday.

There are six British men in action in Paratriathlon today - world and European champion Andy Lewis in the PT2 event, along with Ryan Taylor, former Paralympic swimmer David Hill and George Peasgood in PT4 and Joe Townsend and Phil Hogg in the PT1 event.

Before Rio, BBC News caught up with Townsend to hear about his amazing story.

Watch Joe Townsend's journey from Afghanistan to Brazil

GB's Sascha Kindred has just finished fourth in his heat of the men's S6 50m freestyle, clocking 33.07 seconds.

There are two heats to come and he's going to struggle to make the final.

Elizabeth Hudson
BBC Sport's Paralympics reporter in Rio

The athletes are going through final preparations here before the race start at 14:00 BST.

Britain's George Peasgood is the baby of the triathlon team at 20 and is hoping to win his first major international medal in the PT4 category.

He suffered an injury to his leg when he was two and a half and has undergone several reconstructive surgeries since.

Image source, PA

Good news from Lagoa where Tom Aggar is through to the AS single sculls final on Sunday after winning his repechage in four minutes 56.17 seconds.

Aggar won gold in the event at the Beijing 2008 Games.  

Great Britain ended day two of the Paralympics with an amazing 27 medals, 12 of which were gold.

It means the class of 2016 are already well ahead of the teams sent to Beijing and London in terms of medals won.

This year's team has been set a target of 121 medals, which is one more than they attained at London 2012.

More here...

Image source, bbc

Elizabeth Hudson
BBC Sport's Paralympics reporter in Rio

It's a grey, humid and overcast morning here on the Copacabana - relatively pleasant conditions for the paratriathletes.

The roads have been closed off and final preparations are being made.

And it's not at every sporting event where you need staff like this...

Image source, BBC Sport

Rower Tom Aggar will soon be the first British athlete in action on day three - he goes in the repechage of the AS men's single sculls after finishing second in his heat on Friday.

Lagoa is looking moody...

Image source, BBC Sport

Elizabeth Hudson
BBC Sport's Paralympics reporter in Rio

We'll see history being made in Rio today as the first Paralympic triathlon titles are up for grabs on the Copacabana.

Three titles are up for decision - all for men - PT4, who are the least impaired group here, PT2 and then PT1, who are wheelchair users.

The women's events take place on Sunday.

This is brilliant.

After winning gold for Canada in the men's 100m T53, an emotional Brent Lakatos was surprised by his wife, ParalympicsGB's Stef Reid, who was on BBC Radio 5 live, talking about her silver medal success in the long jump.

Reid takes over from BBC Radio 5 live's Jonathan Overend to interview her husband, with a highlight being: "Congratulations. I'm so proud of you... Are you crying?"

Have a listen below.

Right, so what's happening this afternoon?

Plenty as it happens. Here's what to look out for from a British perspective:

13:30 BST: Shooter Matt Skelhon in R3 10m air rifle SH1 qualification (finals from 15:45)

13:46-14:00: GB's Ellie Simmonds, Sascha Kindred & Ellie Robinson in S6 50m freestyle heats (finals 21:44-21:50)

14:00: GB's first Rio gold medallist Megan Giglia in the women's C1-3 500m time trial final

14:00: Four of Britain's five judokas get under way, including London silver medallist Sam Ingram in the -90kg

14:03: Andy Lewis in the PT2 class as triathlon makes its Paralympic debut

14:07: Andrew Mullen and Brazil's Daniel Dias in S5 50m butterfly heats (final 21:56)

15:20: Joe Townsend, who lost both his legs in an explosion while serving in the Royal Marines, goes in the PT1 triathlon class

16:15: Ryan Cockbill and Richard Davies in R4 10m air rifle

16:30: Jordanne Whiley in wheelchair tennis women's singles first round

And you can head here for a full guide to day three at the Rio 2016 Paralympic Games.

Here's how those three golds in nine minutes unfolded...

• 21:35 BST - Jody Cundy wins his third Paralympic gold in the C4-5 1km, with fellow Briton Jon-Allan Butterworth fourth.
• 21:37 BST - Georgina Hermitage breaks the T37 title world record to take gold in her first Paralympic appearance.
• 21:44 BST - European champion Sophie Hahn wins ParalympicGB's third gold in quick succession in the T38 final, with Kadeena Cox taking bronze.

Relive Hermitage and Cundy's golden moments below...

Need a bite-sized digest of an extraordinary day for ParalympicsGB in Rio?

Our catch-up video, above, will do the job for you. 

Image source, Getty Images

Recovered from the excitement yet?

What a day it was. 

Sprinter Jonnie Peacock (above) capped it all by retaining his T44 100m title with a dominant performance at the Maracana.

Cyclists Sophie Thornhill, with pilot Helen Scott started it off in the women's B 1,000m time trial, while Jody Cundy also triumphed in the velodrome in the C4-5 1km.

Georgina Hermitage, Sophie Hahn and Libby Clegg claimed victory in their respective 100m finals while 15-year-old swimmer Ellie Robinson (below) 15, triumphed in the women's 50m butterfly S6.

And that was just the golds.

Image source, PA

Image source, Getty Images

Remember Super Saturday at the London 2012 Olympics? 

Three golds for Great Britain within 45 minutes was rather impressive...

Image source, PA

... but three in nine minutes?

Image source, Getty Images

Now, that's just plain ridiculous.

Day two of the Rio Paralympics was a bit special for ParalympicsGB...