Slavery is a horrible practice.  Is it still in existence anywhere?
Not in the traditional sense, no. However, human trafficking and commercial lewd acts by force are still, unfortunately, quite common.
It is illegal everywhere though, right?
It's one of those crimes against humanity that's illegal everywhere, yes. Trading people, even if they stay in one country, is horrible.
I agree.  What are the penalties if you are caught?
available.
Definition.
The Office to Monitor and Combat Trafficking in Persons agency of the United States Department of State says that modern slavery', 'trafficking in persons', and 'human trafficking' have been used as umbrella terms for the act of recruiting, harboring, transporting, providing or obtaining a person for compelled labor or commercial sex acts through the use of force, fraud, or coercion". Besides these, a number of different terms are used in the US federal Victims of Trafficking and Violence Protection
and Wildlife, Ngolle Ngolle worked to enforce anti-poaching laws and curb the illegal sale of bushmeat. Although a law designed to protect endangered species from poaching was passed in 1994, it was not enforced until around 2004, and even afterward trade in illegal bushmeat remained quite widespread. Ngolle Ngolle complained in early 2010 that "we see people selling bushmeat everywhere, anywhere, in public places, along the roadsides. And it's more or less putting a shame on our dignity and our commitment to fight illegal poaching."