Linked from
The 8 pages that link to Planula, each with the reason it gives.
LarvaBroader topic: Planulae disperse before settling and developing into a different body form.
Polyp (zoology)Related: After settling on a surface, this larva can develop into a polyp.
Sea anemoneRelated: Many anemones begin life as planulae before settling and developing into polyps.
Turritopsis dohrniiRelated: After settling, this larva develops into the polyp stage.