How does jellyfish give birth?

Answer 1

First the male jellyfish produce the sperm that are released out of the mouth of the male jellyfish. The sperm swim into the mouth of the female jellyfish and fertilise the eggs. The fertilised eggs are released and float to the bed of the sea. They are now called Planulas and will float for up to six days until they attach themselves to something hard like a rock or shell. They will then develop into polyps. Polyps can live like this for over five years using there upturned tentacles to catch shrimp and other small fish. At this stage in their life the jellyfish will look a bit like a sea anemone or a tree with branch like features sticking out of it.

After their many years like this they will have several grooves in will grow deeper in the side of them. The polyp is now a Strobila. The strobila's grooves get so deep it eventually cuts the jellyfish up, and like stack of coins the jellyfish larvae float off to start its next stage of life as an adult jellyfish.

A jellyfish reproduces asexually.

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In most cases, both release sperm and eggs into the surrounding water, where the (unprotected) eggs are fertilized and mature into new organisms. In a few species, the sperm swim into the female's mouth fertilizing the eggs within the female's body where they remain for the early stages of development. In moon jellies, the eggs lodge in pits on the oral arms, which form a temporary brood chamber for the developing planula larvae.
They reproduce using cemacels to their bodies and plop.
by eggs
A female jelly fish rekeases eggs into the water and the male releases sperm.

Once the egg is fertilized it developes into a larva and attaches to a solid surface. It is now a polyp. The polyp grows and begins to form buds that become tiny medusae. The young medusae bud of the polyp and the cycle begins again.

Answer 2

Individual Jellyfish are either male or female. The eggs and sperm develop in special areas called Gonads inside the body wall. The gonads are frequently very colorful and add greatly to the beauty of the living Jellyfish. When all of the eggs and sperm are fully developed, they are released into the stomach and then through the mouth into the sea. Some of the eggs stick to the frilly mouth lips which surround the mouth of the Jellyfish. There they are fertilized by the sperm and continue to develop. As in all many-celled animals, the microscopic fertilized eggs begin a series of cell divisions which finally result in an embryo. However, the embryo does not develop directly into a baby jellyfish, but becomes a tiny, flattened creature called a Planula.

Answer 3

Most jellyfish undergo two distinct life history stages (body forms) during their life cycle. The first is the polypoidstage, when the animal takes the form of a small stalk with feeding tentacles; this polyp may be sessile, living on the bottom or on similar substrata such as floats or boat-bottoms, or it may be free-floating or attached to tiny bits of free-living plankton[21] or rarely, fish[22] or other invertebrates. Polyps generally have a mouth surrounded by upward-facing tentacles like miniatures of the closely related anthozoan polyps (sea anemones and corals), also of the phylum Cnidaria. Polyps may be solitary or colonial, and some bud asexually by various means, making more polyps. Most are very small, measured in millimeters.

In the second stage, the tiny polyps asexually produce jellyfish, each of which is also known as a medusa. Tiny jellyfish (usually only a millimeter or two across) swim away from the polyp and then grow and feed in the plankton.[citation needed] Medusae have a radially symmetric, umbrella-shaped body called a bell, which is usually supplied with marginal tentacles - fringe-like protrusions from the bell's border that capture prey. A few species of jellyfish do not have the polyp portion of the life cycle, but go from jellyfish to the next generation of jellyfish through direct development of fertilized eggs.

Jellyfish are dioecious; that is, they are usually either male or female (occasionally hermaphroditic specimens are found). In most cases, both release sperm and eggs into the surrounding water, where the (unprotected) eggs are fertilized and mature into new organisms. In a few species, the sperm swim into the female's mouth fertilizing the eggs within the female's body where they remain for the early stages of development. In moon jellies, the eggs lodge in pits on the oral arms, which form a temporary brood chamber for the developing planula larvae.

After fertilization and initial growth, a larval form, called the planula, develops. The planula is a small larva covered with cilia. It settles onto a firm surface and develops into a polyp. The polyp is cup-shaped with tentacles surrounding a single orifice, resembling a tiny sea anemone.[citation needed] After a growth interval, the polyp begins reproducing asexually by budding and, in the Scyphozoa, is called a segmenting polyp, or a scyphistoma. New scyphistomae may be produced by budding or new, immature jellies called ephyrae may be formed. A few jellyfish species can produce new medusae by budding directly from the medusan stage. Budding sites vary by species; from the tentacle bulbs, the manubrium (above the mouth), or the gonads of hydromedusae. A few of species of hydromedusae reproduce by fission (splitting in half).[21]

Other species of jellyfish are among the most common and important jellyfish predators, some of which specialize in jellies. Other predators include tuna, shark, swordfish, sea turtles and at least one species of Pacific salmon. Sea birds sometimes pick symbiotic crustaceans from the jellyfish bells near the sea's surface, inevitably feeding also on the jellyfish hosts of these amphipods or young crabs and shrimp.

Jellyfish lifespans typically range from a few hours (in the case of some very small hydromedusae) to several months. Life span and maximum size varies by species. One unusual species is reported to live as long as 30 years. Another species, Turritopsis dohrnii as T. nutricula, may be effectively immortal because of its ability to transform between medusa and polyp, thereby escaping death.[23] Most large coastal jellyfish live 2 to 6 months, during which they grow from a millimeter or two to many centimeters in diameter. They feed continuously and grow to adult size fairly rapidly. After reaching adult size, jellyfish spawn daily if there is enough food. In most species, spawning is controlled by light, so the entire population spawns at about the same time of day, often at either dusk or dawn[24].

from wikipedia
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Answer 4

They produce asexually so they do not mate
They Lay Eggs.

Answer 5

In the spring is when jellies mate. The males release semen and the females release eggs, and then the eggs and semen eventually find each other.

Answer 6

Jellyfish reproduce both sexually and asexually.

Answer 7

every organism reproduces. and the blue bottle is not a type of jellyfish.

Answer 8

Jellies reproduce both sexually and asexually.

Answer 9

they spawn in the same way that fish do

Answer 10

They use their Gonozooids to reproduce.