Mantis
The mating season in temperate climates typically takes place in autumn, while in tropical areas, mating can occur at any time of the year. To mate following courtship, the male usually leaps onto the female's back, clasping her thorax and wing bases with his forelegs. He then arches his abdomen to deposit and store sperm in a special chamber near the tip of the female's abdomen. The female lays between 10 and 400 eggs, depending on the species. Eggs are typically deposited in a froth mass-produced by glands in the abdomen. This froth hardens, creating a protective capsule, which together with the egg mass is called an ootheca. Depending on the species, the ootheca can be attached to a flat surface, wrapped around a plant, or even deposited in the ground. Despite the versatility and durability of the eggs, they are often preyed on, especially by several species of parasitoid wasps. In a few species, mostly ground and bark mantises in the family Tarachodidae, the mother guards the eggs. The cryptic "Tarachodes maurus" positions herself on bark with her abdomen covering her egg capsule, ambushing passing prey and moving very little until the eggs hatch. An unusual reproductive strategy is adopted by Brunner's stick mantis from the southern United States; no males have ever been found in this species, and the females breed parthenogenetically. The ability to reproduce by parthenogenesis has been recorded in at least two other species, "Sphodromantis viridis" and "Miomantis" sp., although these species usually reproduce sexually. In temperate climates, adults do not survive the winter and the eggs undergo a diapause, hatching in the spring.
Macroctopus
"Macroctopus maorum" construct the posterior mantle to push out the eggs during egg laying. The female usually will stop eating for 2 weeks during the laying eggs period and continue to look after the eggs until they hatched. "Macroctopus maorum" usually lay approximate 7000 eggs. Their eggs are usually clusters of 3-12 eggs and cemented directly to the substratum. "Octopus maorum" swept across the eggs sheet with one or more tentacles to keep the eggs well oxygenated, clean and safe from predators. During brooding period female "Macroctopus maorum" will stop feeding so that it produce less wastes and ensure the water quality is good for the eggs. When the eggs are about to hatch "Macroctopus maorum" will frequently squirt water on the eggs using siphon until the eggs hatched. After the eggs hatch, the female "Macroctopus maorum" will swim away and might die as she has been weakened from guarding the eggs. The hatchlings are planktonic and have 7 to 8 suckers per arm. If the hatchling manages to survive, the life cycle will be repeated.