The Pretty 'N Pearly Baby Sea Ponies were a new addition to the My Little Pony line in Year 4. They were baby Sea Ponies with a shimmery, pearlescent finish. Some of the ponies in this set had previously been released as regular baby Sea Ponies without the pearly finish.
Each pony in the line came with a float ring in the shape of an alligator, frog, or turtle.
Because the baby Sea Ponies did not have metal weights in their tails to help balance them when floating, they are not prone to the rust that often damages the adult Sea Ponies.