Add the prawns, olive oil, chives, salt, pepper, lime juice, jalapenos, bell peppers, cucumbers, shallots and coconut milk if using to a large bowl and toss to combine. Let marinate until the prawns are pale and firm to the touch, 5 to 10 minutes. Season to taste with more sea salt, pepper and lime juice if needed.
For the avocado:
Place the avocado halves in a small bowl and lightly smash. Sprinkle with sea salt, black pepper and a squeeze of lime or lemon juice.
Turn the ceviche out onto a large platter or place in a large bowl next to the avocado. Serve family-style, with wontons, chips, crackers or wafers.
Serving suggestions: crispy wontons, corn chips, crackers or wafers (make sure they are simply flavored so the flavor of the BC Spot Prawns comes through).
The BC Spot Prawn season starts in May and runs through June; frozen BC Spot Prawns are available year-round. Halibut, scallops or albacore tuna can all be used in place of BC Spot Prawns.