A lot of skatesand rays and the chimaerasarenot as charismatic as whitesharksorwhale sharks or a manta ray, butthese things are probably taken in far greater numbers in terms of by-catch.
There is the best land based whale watching anywhere, and plenty of opportunities to get out on the water, including diving with Great Whitesharks, something people come from all around the world to do and can easily be done as a day activity in Cape Town (though cage diving remains controversial).