Cook cauliflower until very tender in salted water with fennel seeds.
Drain water and add cream to the pot. Simmer 2 minutes and then puree until smooth. Reserve.
In a large heavy bottom pot, melt butter with leeks, fennel, bay leaves and fennel seeds until aromatic and tender but not colored. Add wine and Pernod and bring to a boil. Add scallops and reduce heat to low.
Cover and gently cook for a few minutes until scallops are just barely cooked. Remove scallops to a colander to drip. Catch drippings in another vessel and add back to the juices remaining in the pan.
Stir in cauliflower puree. Pour puree in the bottom of a chafing dish and add scallops. Sprinkle with chives and/or parsley.