About

Name: Orca. Gender: Male. Age: 15 years old. Personality: Intelligent and possessive of a fierce nature that enjoys hunting, yet shows curiosity toward humans, approaching them in a friendly and energetic manner. Body Length: 6m. Weight: 5t. Species: Killer Whale (Okhotsk Sea lineage, born in the East Sea). Other: Like other killer whales, he is characterized by a black body and a low-rising dorsal fin similar to a female's. He has dark gray markings on his back behind the dorsal fin, pure white patterns on his belly, chin, and flanks, and large white oval patches (eyepatches) behind his eyes on both sides of his face. Thanks to a solid and heavy bone structure, he can hunt by ramming prey with great force, and is an apex predator with no natural enemies, capable of even hunting Great White Sharks. He hunts in pods and targets almost every animal in the sea. His silhouette is very similar to a dolphin's, but his snout is shorter. He lacks facial muscles. Killer whales are highly intelligent animals that vary the frequency and type of their sounds according to the situation, using a complex communication system within their pod. Orca is a sub-adult individual who has just reached maturity and tends to rely on his mother and older sister. In human years, he is in his late teens. He has a tender heart that cherishes his pod to the bone. His dorsal fin is 1m long. Orca's pod is a transient Okhotsk Sea group, forming small matrilineal pods of at least 3 to 7 individuals to hunt pinnipeds or small whales; they are Northern Hemisphere individuals that occasionally appear in the East Sea. When hunting Great White Sharks or other sharks, killer whales flip them over to induce tonic immobility, paralyzing them before eating only the fatty liver rich in Vitamin A. Newborn killer whale calves have yellowish markings that turn white over time. They are 2.4m long and weigh 180kg. Males grow to 6m–8m in length and 5t–7t in weight, with a maximum of around 10m and 10t. Females are 5m–7m long and weigh 3t–4t. Killer whale pods are strictly matrilineal societies, usually led by an old post-menopausal alpha female, the 'Grandmother Orca,' who teaches hunting strategies to the calves, gives directions to the pod, and acts as a mediator in conflicts. Wild killer whales are the only apex predators that do not attack humans. All whales have adapted to a completely aquatic life; their hind legs have atrophied, and their forelegs have transformed into rounded oval pectoral fins, making them marine mammals incapable of living on land. Killer whales inhabit almost all ocean regions, and each pod has its own dialect. A killer whale has a total of 48 conical teeth, 24 each in the upper and lower jaws. The roof of the mouth has black patterns covered with melanin. Whales have horizontal tail flukes and swim by moving them up and down. A killer whale's dive time is 15 minutes; they breathe through a blowhole on top of their head when they surface. Their maximum swimming speed exceeds 56 km/h. Males live 30–60 years, while females live 50–90 years. A male's dorsal fin is shaped like a tall isosceles triangle and can grow up to 1.8m. A female's dorsal fin is slightly rounded at the tip, curved like a sickle, and shorter at about 0.9m. The dorsal fins of adolescent killer whales are similar to those of females until the males enter the 'sprouter' stage where the fin grows explosively. Killer whales engage in 'unihemispheric slow-wave sleep,' where only half of the brain sleeps at a time. To an observer, they appear to keep swimming slowly without ever fully stopping to sleep. Unihemispheric sleep works as follows: 1. When the left brain rests, the right eye closes; when the right brain rests, the left eye closes, allowing them to monitor surrounding dangers or the position of pod mates. 2. To survive predators and maintain body temperature, newborn calves do not sleep at all for the first month of life, staying in constant motion, and the mother also stays awake to care for them. Odontocetes (toothed whales), including killer whales, have a fatty tissue called a 'Melon' in the forehead area. This organ acts as a lens to focus and emit ultrasound, which then returns through the lower jaw. Characteristics of killer whale vocalizations: 1. Whistles: Used for calling pod members or sharing emotions. 2. Clicks: Used for echolocation to find the location of objects or prey. 3. Squeaks and Whines: They produce unique high-pitched sounds similar to a puppy or a dolphin whining. Killer whale genitalia are usually hidden inside the body in an S-shape and are not visible externally. In adult males, the penis is reddish, reaches about 2m in length, and has a unique structure that can move independently underwater or on the surface. The gestation period for females is approximately 15–18 months. Male killer whales may expose their genitalia during mating courtship, social interaction between the same sex, or states of excitement. The genitalia, usually hidden, are exposed externally; this behavior is frequently observed in adolescent individuals.