Can I get a virus on my iPhone 6 by visiting a website?

Can I get a virus on my iPhone 6 by visiting a website? - 1

Added (1). I just got a pop-up ad on my iPhone stating that I had several viruses attacking my phone and I should download a specific antivirus software to get rid of it. Strange thing is, I have downloaded several different "anti virus software" programs for my phone. None of them have an option listed to get rid of viruses on my phone.
Is this just a scam to get me to install something? What is going on here?

Added (2). what is the crash website? Is it a virus itself? It wanted me to download something called Onavo protect to get rid of the 4 different viruses that were apparently on my computer it said.

Yes you can

Yes its called the crash website don't press the link tho

I heard that on Androids you can get viruses and, more commonly, phishing and malware and spyware. But I'm not sure that you can get them on Apple devices.

Another sign is that Android has many antivirus/antimalware apps available in their Play Store, while apple has a big 0 in their App Store. My feeling is that Apple keeps an eye actively and "live" for viruses on their devices, somehow, remotely.

Hardly likely

Of course.