Nototodarus sloanii is a species of squid

Squid

Squid are cephalopods of the order Teuthida, which comprises around 300 species. Like all other cephalopods, squid have a distinct head, bilateral symmetry, a mantle, and arms. Squid, like cuttlefish, have eight arms arranged in pairs and two, usually longer, tentacles...

 commonly known as the New Zealand Arrow Squid or Wellington Flying Squid. N. sloanii is a favoured prey species of a number of marine mammals and diving birds. For example, New Zealand Arrow Squid is an important food source for the endangered Yellow-eyed Penguin

Yellow-eyed Penguin

The Yellow-eyed Penguin or Hoiho is a penguin native to New Zealand. Previously thought closely related to the Little Penguin , molecular research has shown it more closely related to penguins of the genus Eudyptes...

, Megadyptes antipodes. Furthermore, N. sloanii is sought by trawler fishermen for human consumption; in this trawling process Australian Sea Lion

Australian Sea Lion

The Australian Sea Lion , also known as the Australian Sea-lion or Australian Sealion, is a species of sea lion that breeds only on the south and west coasts of Australia...

s are frequently killed since they prey upon N. sloanii.