<Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Placozoa </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Cnidaria (jellyfish, etc .) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td> </Td> <Td> <P> Placozoa </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Cnidaria (jellyfish, etc .) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> <P> Placozoa </P> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Cnidaria (jellyfish, etc .) </P> </Td> </Tr>

What type of skeleton does a sponge have