A k-strategist is an organism that has few, but intelligent and hardy offspring. They have prolonged parental care, individuals can reproduce multiple times in their life, they have long life expectancies, and the organisms are usually large. K- strategists invest a lot of energy into the growth of one baby, with the expectation that the baby will live long. K-strategists almost always live in stable environments. A tree is an example of a k-strategist, a large organism with a long growing period and a long life-span.