Prepare green jello per package instructions.
Pour green jello along bottom of a baking dish or glass bowl.
Chill for 2 hours or until set.
Prepare blue jello per package instructions.
Pour blue jello on top of green jello.
Chill for 2 hours or until set.
Wash and destem strawberries.
Cut all strawberries in half vertically. Set aside 2 halves of largest strawberry.
Cut smaller strawberry halves into strips with tip of each strawberry pointing toward you. Each half should yield 3–4 strips. Set strips from edge of each half (with a rounded side) in a separate pile from rectangular strips cut from center of each half.
Assemble strawberry giant squid on cutting board. To make head and body, situate one half of largest strawberry so that wide end is toward you. Connect wide end of second half with wide end of first so that point is facing toward you. Use rectangular strips to create limbs by connecting two rectangular strips and one rounded-edge strip at the end. You should create five limbs in total.
Place strawberry giant squid on surface of jello.