Squid engage in internal fertilization, but rather than using a penis for the transference of sperm cells, the males place a packet of sperm cells, called a spermatophore, into the femaleâ€™s mantle, or body cavity; however, individual squid species exhibit variations on this general model. Shortly after this sperm transfer takes place, the female excretes fertilized eggs into the water.Know More
Many male squid species possess long, specialized tentacles or arms for transferring spermatophores. In many cases, these tentacles break off once inside the female. Some species engage in elaborate courtship rituals that feature a “mating dance” and stunning visual displays in which the squid change colors rapidly. Females of some species only mate with one male while others are polyandrous and mate with up to three different males at three different times. In some species, the largest males are the most successful breeders while in others the males are not even as large as the females.
Most squid are semelparous, meaning that they only breed during one season before they die. While some species live long lives and are capable of breeding in consecutive seasons, many squid species experience a very high mortality rate. This makes it rare for squid to live long enough to breed twice.Learn more about Squid
Squids, which are carnivorous cephalopod mollusks of the order Teuthoidea, usually live for only two to three years. Squids are highly developed marine invertebrates with eyes that resemble human eyes.Full Answer >
Zebras reproduce sexually: The male zebra, which is called a stallion, mounts a female zebra, which is called a mare, and deposits sperm in the mare's vagina via the stallion's penis. If the mating is successful, the mare births a single foal 12 to 13 months later.Full Answer >
The squid's natural predators include birds, fish, sharks and whales. Squid predators vary depending on their habitat. Squid that live near the surface of the water or in warm waters have an increased risk of being eaten, whereas squid that live in icy waters have fewer predators and mainly only have to be wary of sharks and whales. Most capable sea creatures feed on squid.Full Answer >
Most millipedes reproduce sexually via internal fertilization. The precise method differs between species and may or may not involve courtship behavior or the use of pheromones.Full Answer >