Alexandre Penao is a 6th degree Black Belt from Carlson Gracie and one of the most respected BJJ instructors in Brazil. He is currently teaching at Fitplus (Halifax) and doing seminars in Canada (yes, Canada!). I love when they come to Canada instead of the USA :)
*if anyone know his seminar schedule, let us know.
He is putting online a sequence videos showing attacks from the turtle position. You can check them at:
Turtle Attacks at bjjwiki