The whale shark (Rhincodon typus) is the largest known fish in the world. This is a slow-moving filter feeding shark belonging to the class Chondricthyes (cartilaginous fishes). It is a rare species and has been declared as "vulnerable" by IUCN, because its population is decreasing at an alarming rate. It is called whale shark as it attains huge size and it’s feeding habit resembles to whales.
The displayed whale shark specimen is about 40 feet long and weighed approximately 16 tones at the time of capture. It is the biggest specimen ever recorded in the world. This specimen was 50 years old when caught on the coast of Karachi. Its liver weighed about 800 kg and the weight of ovary was approximately 120 kg with nearly 500 eggs. The died specimen was seen on February 6, 2012 in the Ghorabari area of Pakistani territory in the Arabian Sea. It was brought to Karachi Fish Harbour on February 7, 2012. Karachi Fish Harbour Authority and Marine Fisheries Department initially took the possession of this huge shark specimen. Meanwhile, Pakistan Museum of Natural History remained in close contact with the Karachi Fish Harbour Authority and Marine Fisheries Department. With consent of all the stakeholders, it was decided that this unique specimen should be preserved and displayed in the Pakistan Museum of Natural History for future research and education. The specimens has been reconstructed and mounted with the help of UNESCO and displayed in PMNH for educating the general public and students.