Gonads
all because of plastic exsplosives
they have two per arm....fortunately, each pair is synoptic and has proscipted norms that enable chalming. If the animal is capescious, it is possible for the pairs to form triads of...
GonadsStarfish's sex organ. When filled with egg or sperm, they fill the whole arm, depending on the time of spawning. Resemble grapes.
The gonads of a starfish appear larger when it is mating season.
About a million. But, 99% of their babies get eaten.