Home > Invertebrates > Flatworms

Updated 8/14/2016

Phylum Platyhelminthes

Flatworms

These beautiful animals are only a few cells thick and are very simple.  They absorb oxygen through the skin, lack a complex nervous system, and food and waste is exchanged at the mouth.  Despite their delicate bodies flatworms are active carnivores that prey upon small invertebrates.  The majority of species are active at night.  Due to their cryptic nature, multitude of color patterns, and scarcity of flatworm specialists, many remain undescribed.

More Hawaii flatworms on John Hoover's website

Egg laying in aquarium

 

 

HAWAII

Pseudoceros ferrugineus

FUCHSIA FLATWORM

 

Pseudobiceros cf. dimidiatus

TIGER or DIVIDED FLATWORM

 

Pseudoceros paralaticlavus

GOLDRIM FLATWORM

 

Pseudobiceros 14

FALSE GOLDRIM FLATWORM

 

Pseudobiceros periculosus

ORANGEMARGIN FLATWORM

 

Pseudobiceros cf. gloriosus

GLORIOUS FLATWORM

Pseudobiceros stellae

STELLA'S FLATWORM

 

Callioplana marginata

MARGINED FLATWORM

 

 

Pseudobiceros gratus

PLEASING FLATWORM

Pseudobiceros

HAWAIIAN SPOTTED FLATWORM

 

Pseudobiceros A

SALT & PEPPER FLATWORM

 

cf. Pseudoceros 17

ORANGE-SPOTTED FLATWORM

 

Pseudocerotid E

FINELINED FLATWORM

 

Maritigrella eschara

ESCHARA FLATWORM

 

Pericelis 4

PURSE SHELL FLATWORM

 

Pericelis 3

RETICULATED FLATWORM

 

Thysanozoon 5

KNOBBY FLATWORM

 

Thysanozoon tentaculum

HAWAIIAN KNOBBY FLATWORM

 

 

Pseudobiceros cf. 15

BROWN-STRIPE FLATWORM

 

Pseudobiceros 11

WHITE-STRIPE FLATWORM

 

Phrikoceros cf. katoi

KATO'S FLATWORM

 

Pseudoceros scintillatus

SPARKLING FLATWORM

cf. Pseudoceros 18

ORANGETIP FLATWORM

 

Convoluta sp.

ACOEL FLATWORM

Pseudocerotid C

ORANGE FLATWORM

 

Tytthosoceros nocturnus



NIGHT FLATWORM

cf. Euryleptid 6

 

THREE-LINED FLATWORM

 

 

INDO-PACIFIC

Pseudobiceros bedfordi

BEDFORD'S FLATWORM

 

Pseudoceros lindae

LINDA'S FLATWORM

 

Pseudoceros indicus

INDIAN FLATWORM

 

Pseudoceros bifurcus

PURPLE FLATWORM

Pseudoceros

UNIDENTIFIED FLATWORM

 

Pseudoceros

UNIDENTIFIED FLATWORM

 

Pseudoceros

 

UNIDENTIFIED FLATWORM

 

Pseudoceros

 

UNIDENTIFIED FLATWORM

Acanthozoon sp.

ACANTHOZOON