Thomas of Cantimpré [circa 1200-1272 CE] (Liber de natura rerum, Marine monsters 6.25): Galalca is a sea monster, as Aristotle says, which has habits unlike all other animals. When this animal feels that her offspring are alive in her belly, she pulls them out of her belly, not waiting for the due time to give birth. But when she has extracted the fetuses, if indeed she finds them ready for life, she leaves them outside. But if not, she puts them back in the womb and gives them back to herself, that she may foster them. - [Badke translation/paraphrase]

Albertus Magnus [ca. 1200-1280 CE] (De animalibus, Book 24, 58): Galalea, so they say, is a marine animal which displays a behavior totally unlike all other animals. When it feels the movement of the foetuses within its womb, it extrudes the offspring with a violent contraction; if the newborn are sufficiently developed, it suckles and nurtures them; if they are immature, it replaces them in the womb and coddles them until they achieve viability. - [Scanlan]