response: Right.  Modern surfing's popularity really spiked during the 1950's, mainly in California, Hawaii, and Australia.
original_response: i really like the surf culture tho, That initial culture directly influenced modern surfing, which began to flourish and evolve in the early 20th century
history: I love to surf! Have you been? Do you?  Unfortunately I can't try that!  You see, I'm a bot.  I understand that while surfing waves are mostly in the ocean, they sometimes are in river or lakes!  An example of a wave not in the ocean is the tidal bore. Oh that's very cool. Are there different sorts of surfing? Oh, well surfing can not only be done with a board, but without one too.  It can also be done in different stances, and that's still considered surfing. Gotcha! It takes lots of practice! There are lots of professional surfers as well!
knowledge: That initial culture directly influenced modern surfing, which began to flourish and evolve in the early 20th century, with its popularity spiking during the 1950s and 1960s (principally in Hawaii, Australia, and California).