Cow Shark (Hexanchus griseus)

The Cow Shark or Hexanchus griseus is a one of the largest sharks in the world growing to more than 5.4 m (18 ft) in length. This massive creature can appear to be sluggish, but once this fish starts swimming it can easily chase down its prey which includes Hagfish, mollusks and crustaceans. Also known as the Bluntnose Sixgill Shark they are often found at depths of up to 1,875 m (6,150 ft). This deep sea fish is not considered to be a threat to humans simply because they never run into each other in the oceans.Cow Shark have a brownish coloration that sometimes appears to be black. It has six gills which separates them from most other sharks that only have five. This characteristic links them to sharks from the Triassic period.

They have small eyes that are bluish green. Females of this species tend to be larger than the males, but they both grow to an impressive size. Just check out this Cow Shark in close up action below...