they can repoduce sexually by the male part realeasing sperm into the water and it would reach the female part and fertilize the eggs or it and reproduce asexually through budding
they can reproduce in two ways: sexually and asexually. in sexual reproduction, they release sperm into the water in hopes that it will land inside another sponge and fertilize an egg cell. all...
Sponges reproduce by budding, where basically they start growing a new sponge on them, and once it grows big enough it falls off. This is also an asexual form of reproduction.