To do whale in Baby Sign Language, your non-dominant hand is positioned horizontally in front of your body, as if it is the surface of the water. With your dominant hand hold the middle three fingers of your strong hand out (making the ASL sign for 'W'), and move the 'W' over and under the water, as if it were a whale bobbing in and out of the water.
Teach your baby the baby sign for whale using the flash cards. You can make a game out of using all the animal signs flash cards.
Teach your baby the sign for whale when you encounter this and other sea creatures in cartoons, movies, story books, and on actual visits to an ocean park or the beach.