Monday, April 12, 2010

Hatchlings... day 18

The tadpoles are continuing to change, slowing getting larger over the last few days.  The most visible external change is in the form of the mouth.  The two hard beaks are retracting back and getting closer together and the tissue around the teeth is moving forward.  What uesd to be a blebby mass is beginning to form an elongated mouth and the teeth are pointing inwards a bit.

The pigmented cells are forming larger groups and regions are forming where the all of the cells have a unique color.   The lower torso is clearly developing internal muscles and continues to gain definition of the internal organs.

The tadpoles are also becoming more agile at moving about the environment.  The tail seems to be flexible and capable of rotation on most of the joints giving fine control of motion in all three dimensions.