This star isn't far away-- it's just very, very small! Parvulastra parvivipara is the smallest known species of starfish, with adults reaching only 1 cm (0.4 in) in diameter. What's even more interesting, the Tasmanian live-beaing sea star is a self-fertilizing hermaphrodite, and juveniles hatch and develop within their parents gonads before being released, making them ovoviviparous.

A bat star (Patiria miniata) in Mendocino, CA, USA

AKA Asterina (Asteriscus) regularis, Asterina (Patiriella) regularis, Asterina cabalistica and Asterina regularis.

One of New Zealand's most common rocky shore starfish, abundant in shallow water around both mainland islands, in a large variety of colours including blue, green, brown, orange and red, and have 4–6 arms.

They feed on algae, barnacles and invertebrates - most of the organism in the rockpool around it are potentially lunch.

Cushion sea star (Meridiastra calcar)

Another endemic NZ Asterinid, described as Patiriella mortenseni in 2002, 77 years after T. Mortensen first noticed it wasn't Patiriella regularis. Two years after that genetic evidence got it moved to Meridiastra anyway.

Less tolerant of low salinity than P. regularis. This is most relevent in Fiordland, where a layer of fresher water melting off the glaciers overlays the fully saline deeper water in Milford and Doubtful Sounds.

Patiria pectinifera

クラゲで有名な加茂水族館に行ってきました！ 記念にイトマキヒトデの写真をUP!!!!

I went to Kamo Aquarium which is famous for jellyfishes. As a memory, a picture of the Blue bat star is uploaded!!!

Aquilonastra conandae

...is a very small (< 2cm) species of Asterinid starfish which was first discovered at Reunion Island, and was then later identified across the Mascarene Islands. Aquilonastra conandae individuals often have around seven or eight arms, which are often irregular in length.  This is most likely due to regeneration.

Classification

Animalia-Echinodermata-Asteoidea-Valvatida-Asterinidae-Aquilonastra-A. conandae

Asterina anomala

Asterina anomala A very small starfish with about one centimeter in diameter. The asterina anomala divides itself in two, then each piece grows up to a new individual. For this reason, several arms are always smaller than the others.

カワリイトマキヒトデ 直径1センチ程度の極小のヒトデ。 カワリイトマキヒトデは、自ら二つに分裂し、それぞれの切れ端が新しい個体に成長する。 このため、カワリイトマキヒトデは、数本の腕が大きくて残りの腕が成長中の奴ばっかりである。