There are 15 words that start with 'seab'.
| seabag | seabed | seabags |
| seabeds | seabird | seaboot |
| seabeach | seabirds | seaboard |
| seaboots | seaborne | seaboards |
| seabeaches | seaborgium | seaborgiums |
Note: These 15 words that start with 'seab' are found from the USA & Canada version of the tournament Scrabble word list.