There are 12 words that start with 'seaf'.
| seafood | seafowl | seafarer | 
| seafloor | seafoods | seafowls | 
| seafront | seafarers | seafaring | 
| seafloors | seafronts | seafarings | 
Note: These 12 words that start with 'seaf' are found from the USA & Canada version of the tournament Scrabble word list.