Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Most phoronids have indirect development, with the formation of a planktotrophic larva called actinotroch. Actinotroch larvae spend weeks in the water column before settling in the habitat of the adult, which includes both consolidated and unconsolidated substrates, depending on the species.
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.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
Named pelagosphaerae, the larvae of many species of sipunculan worms are transparent and swim freely in the water column for months before they become the adult stage which has a vermiform appearance and lives buried in sand or mud.
