Sessility (motility)
Videos
Sessility, a property of certain animals, is a lack of self-locomotion. Sessile animals do not have natural motility, and are immobile unless there are external forces. Usually, sessile animals are pe
Generally sessile Hydra attached to a substrate
Blue mussels, Mytilus edulis, are sessile and exhibit clumping
Cochineal
Videos
The cochineal is a scale insect in the suborder Sternorrhyncha, from which the natural dye carmine is derived. A primarily sessile parasite native to tropical and subtropical South America through Nor
Sessility (motility)
…motile larval stage and become sessile at maturity. Conversely, many jellyfish develop as sessile polyps early in their life cycle. In the case of the cochineal, it is in the nymph stage (also called the crawler stage) that the cochineal disperses. The juveniles move to a feeding spot and produce long wax…
Cochineal drawing
A cluster of females
Cochineal on opuntia in California
Cochineals on cacti in La Palma, Canary Islands