[2] It is a predator[3] and scavenger that is fast-swimming and has a highly developed long-range chemoreceptive tracking ability, allowing large numbers to rapidly congregate at carcasses that reach the bottom.

[4] Eurythenes gryllus can grow to c. 15 cm (6 in) long and is red, brown or pale in colour with white eyes.

[5] Those of relatively shallow waters only reach about half the length of those found at the largest depths.

There are also other morphological differences and genetic studies have revealed several distinct splits, both geographic and depending on depth.

[2] Media related to Eurythenes gryllus at Wikimedia Commons This amphipod article is a stub.