Pseudoceros bifurcus flatworm, Sulawesi, Indonesia, Southeast Asia, Asia

Acoelous flatworms (Acolela order), Sulawesi, Indonesia, Southeast Asia, Asia

Gold dpotted Flatworm, Thysanuzoon flavomaculatum, Red Sea, Dahab, Egypt

Flatworm crawls over reef, Pceudoceros sp., Raja Ampat, West Papua, Indonesia

Acoel flatworms cover a coral colony on a reef in Raja Ampat, Indonesia. This remote, tropical region is home to extraordinary marine biodiversity.

Polyclad flatworm (Pseudobiceros flowersi), Dumaguete, Negros, Philippines, Southeast Asia, Asia

Leopard flatworm (Pseudobiceros pardalis), crawling over corals with head facing front, Cayman Islands, Caribbean

Unidentified flatworm (Pseudoceros spp. ) very colourful with orange and indigo colours over indistinct seabed, Sipadan, Mabul, Malaysia

Planarian Stem Cell Colony

Sheep Liver Fluke, SEM

Frontal view of starry sky flatworm (Thysanzoon nigropapilosus) crawling on stone coral (Porites), Red Sea, Port Ghalib, Egypt, Africa

The Bubble Coral Shrimp (Vir philippinensis) is found only on this species of coral, Pleurogyra sinuosa. The brown oval objects are actually Acoel Flatworms (Waminoa sp) that feed on nutrients trapped in mucus covering the coral, Philippines

Fiji, Lau Islands, flatworm red and pink with yellow trim, green background A91F

Hawaii, gold-lace nudibranch, with red sponge.

Swimming Flatworm, Pseudoceros spec., Short Dropoff, Micronesia, Palau

Swimming Flatworm, Pseudoceros spec., Short Dropoff, Micronesia, Palau

Bedford's Flatworm (Pseudobiceros bedfordi) free-swimming, Circus dive site, Bunaken, Manado, Sulawesi, Indonesia