The Greenlаnd shаrk is аn unusual species in that it is thоught tо nоt reproduce until it is about 150 years old. The oldest shark found might be as old as 500 years old. There is relatively little known about this shark because of its residence in very deep water and the fact that techniques to estimate their age have only recently been developed. Some conservationists have expressed that global climate change may impact this shark’s population. However, so little is known about the shark that they don’t know what the current population trends are. Here is a picture of this fabulous creature By Hemming1952 - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=75505720 You are a population ecologist at heart, in describing this species to your friends and family (which you should definitely do) compared to most other species on the planet we would describe it as: