Using a spiraliser, make the courgette into ribbons and cut the cucumber into small chunks.
Mix the courgetti with the quinoa, cucumber, lime juice and zest, himalayan salt and olive oil.
Remove the rind from the watermelon and cut into squares.
Mix the watermelon into the courgetti mix and sprinkle the black sesame seeds over the top.
Optional - top with grilled king prawns, 4 per person, if desired.