Found during an artificial fertilization experiment. We do not know if it is the result of abnormal development or if the larva was reproducing asexually.

Blastopore and ring of mesenchyme cells secreting the larval skeleton.

Denominadas pelagosferas, as larvas de muitas espécies de sipuncúlidos são transparentes e nadam livres na água por meses antes de se transformarem no adulto, que tem aspecto vermiforme e vive enterrado na areia ou lodo.

Vestibule in an eight-arm pluteus larva.

First cleavage

One type of larva typical of bryozoans, cyphonauts spend weeks in the water column until settling on a substrate such as rocks or algae, undergoing metamorphosis into the adult form and creating a new colony.

Courtship ritual between a male and a female.

Denominadas pelagosferas, as larvas de muitas espécies de sipuncúlidos são transparentes e nadam livres na água por meses antes de se transformarem no adulto, que tem aspecto vermiforme e vive enterrado na areia ou lodo.

Female