Answer

There is one Dhai Dweep in Jain cosmology.

Explanation

Dhai Dweep means “two and a half continents.” It refers to the human-inhabited region where spiritual practice and liberation-related efforts are possible.

It includes:

• Jambudweep
• Dhatakikhand Dweep
• Half of Pushkarvar Dweep

So, Dhai Dweep is not a count of many separate Dhai Dweeps; it is the name of one specific region made up of two and a half dweeps.

Takeaway

In Jain Dharma, there is one Dhai Dweep, consisting of Jambudweep, Dhatakikhand, and half of Pushkarvar Dweep.