Voiced retroflex fricative

Voiced retroflex non-sibilant fricative
Voiced retroflex non-sibilant fricative
ɻ˔
Audio sample
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Voiced retroflex fricative
Voiced retroflex fricative
ʐ
Audio sample
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Encoding
X-SAMPA	z`

	Dental	Interdental	Alveolar	Postalveolar
	Dental	Interdental	Alveolar	Retracted	Retroflex	Palatoalveolar	Alveolopalatal
Sibilant	z̪	z̪͆	z	z̠	ʐ	ʒ	ʑ
Non-Sibilant	ð	ð̪͆	ɹ̝		ɻ˔	ɹ̠˔

In phonetics, voiced retroflex fricatives are types of consonantal sounds.

Sibilant

The voiced retroflex fricative is a sound used in some spoken languages. It is not in English, but it is in languages such as Mandarin, Polish, Russian, Slovak, and Ukrainian. The sound is similar to /ʒ/, but with the tongue curled back.

Characteristcs

The phonation is voiced. This means that the vocal cords vibrate while the sound is being pronounced.
The place of articulation (where the sound is produced) is retroflex, which prototypically means it is articulated sub-apical - with the tip of the tongue curled up. But more generally This means that it is postalveolar without being palatalized. That is, besides the prototypical sub-apical articulation, the tongue contact can be apical (pointed) or laminal (flat).
The manner of articulation (how the sound is produced) is fricative. This means that this sound is produced by constricting air flow through a narrow channel at the place of articulation, to make turbulence.
The manner of articulation (how the sound is produced) is sibilant fricative. This means that it is generally produced by channeling air flow along a groove in the back of the tongue up to the place of articulation, at which point it is focused against the sharp edge of the nearly clenched teeth, causing high-frequency turbulence.