Shellsea is a distinctive girls' name in United States, ranking #13436 in 2006 with 8 recorded births. The name reached its all-time peak in 1998 with 13 births ranking #7466. Since 1996, the popularity has increased by 14.3%. In 2006, approximately 1 in every 237,634 girls born was named Shellsea. FALLING Recent data shows the name is currently falling.