Hyperiidea

Hyperiidea
Hyperia galba (Hyperiidae)
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Crustacea
Class:	Malacostraca
Order:	Amphipoda
Suborder:	Hyperiidea H. Milne-Edwards, 1830
Families
See text

The Hyperiidea are a suborder of amphipods, small aquatic crustaceans. Unlike the other suborders of Amphipoda, hyperiids are exclusively marine and do not occur in fresh water. Hyperiids are distinguished by their large eyes and planktonic habitat. Most species of hyperiids are parasites or predators of salps and jellyfish in the plankton, although Themisto gaudichaudii and a few relatives are free-swimming predators of copepods and other small planktonic animals.

Taxonomy

According to Vinogradov et al. in 1996, 233 species of Hyperiidea are known.

Some controversy exists as to the number of families in the Hyperiidea, being given as between 20 and 23 depending on whether groups like the Thaumatopsidae are considered distinct or not. The taxonomy of Hyperiidea currently accepted by the World Register of Marine Species is as follows:

Column-generating template families

The templates listed here are not interchangeable. For example, using {{col-float}} with {{col-end}} instead of {{col-float-end}} would leave a <div>...</div> open, potentially harming any subsequent formatting.

Column templates

Type	Family	Handles wiki table code?†	Responsive/ mobile suited	Start template	Column divider	End template
Float	"col-float"	Yes	Yes	{{col-float}}	{{col-float-break}}	{{col-float-end}}
	"columns-start"	Yes	Yes	{{columns-start}}	{{column}}	{{columns-end}}
Columns	"div col"	Yes	Yes	{{div col}}	–	{{div col end}}
	"columns-list"	No	Yes	{{columns-list}} (wraps div col)	–	–
Flexbox	"flex columns"	No	Yes	{{flex columns}}	–	–
Table	"col"	Yes	No	{{col-begin}}, {{col-begin-fixed}} or {{col-begin-small}}	{{col-break}} or {{col-2}} .. {{col-5}}	{{col-end}}

^† Can template handle the basic wiki markup {| | || |- |} used to create tables? If not, special templates that produce these elements (such as {{(!}}, {{!}}, {{!!}}, {{!-}}, {{!)}})—or HTML tags (<table>...</table>, <tr>...</tr>, etc.)—need to be used instead.

Distribution

Hyperiidea are known from many oceans of the world, including 69 species in the Southern Ocean.