Part 2 of L41 Mega!
L41 is estimated to be the largest of the Southern Residents--that dorsal fin is over six feet tall. Many of you are aware that male orcas are larger than female orcas and characteristically have that straight/tall fin (unless they're in captivity, of course...). Their larger size means that a larger amount of biochemicals and pollutants accumulate in the blubber of male killer whales. Put simply, their toxin levels are more concentrated, which is why they don't live as long as the females. Females are able to rid themselves of some of their toxins when they are a nursing a calf. Calves essentially receive a toxic milkshake, which contributes to the 50% mortality rate that they face. It's important that we keep the ocean clean, so that these animals aren't being poisoned by the toxic substances that leak from their blubber reserves.