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A pregnant Southern platyfish. Pregnancy has been traditionally defined as the period of time eggs are incubated in the body after the egg-sperm union. Although the term often refers to placental mammals, it has also been used in the titles of many international, peer-reviewed, scientific articles on fish, e.g. Consistent with this definition, there are several modes of reproduction in fish ...
Lanugo is very thin, soft, usually unpigmented hair that is sometimes found on the body of a fetus or newborn. It is the first hair to be produced by the fetal hair follicles, and it usually appears around sixteen weeks of gestation and is abundant by week twenty. It is normally shed before birth, around seven or eight months of gestation, but ...
Amniotic sac. The amniotic sac, also called the bag of waters[ 1][ 2] or the membranes, [ 3] is the sac in which the embryo and later fetus develops in amniotes. It is a thin but tough transparent pair of membranes that hold a developing embryo (and later fetus) until shortly before birth. The inner of these membranes, the amnion, encloses the ...
Baby Shark. " Baby Shark " is a children's song associated with a dance involving hand movements dating back to the late 20th century. In 2016, "Baby Shark" became very popular when Pinkfong, a South Korean entertainment company, released a version of the song on June 17, 2016, with a YouTube music video which went viral in social media, online ...
Massive makos, Queen Bosses and a baby angel shark on Discovery 'Shark Week,' where women shine. MARK KENNEDY. July 3, 2024 at 11:06 AM. NEW YORK (AP) — Imagine stepping into a life-sized whale ...
A 13-year-old girl bravely fended off a shark in the waters off of Fort Pierce, Florida, and is recovering after the attack left her with bites on her torso, arm, finger and knee.
Embryonic development in the human, covers the first eight weeks of development; at the beginning of the ninth week the embryo is termed a fetus. The eight weeks have 23 stages. Human embryology is the study of this development during the first eight weeks after fertilization. The normal period of gestation (pregnancy) is about nine months or ...
The image emerging from beneath the boat had the shape of a shark, a 50-foot, 40-ton shark. It was the kind of image that would cause a human heart to race, and it certainly stirred the interest ...