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Phylum Platyhelminthes
Flatworms
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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 this flatworms are active carnivores that prey upon small
invertebrates.
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HAWAII
Pseudoceros
ferrugineus
Sharks Cove, Oahu, 30 feet
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Sharks Cove, Oahu, 30 feet |
Sharks Cove, Oahu, 30 feet |
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FUCHSIA FLATWORM
| Common on reefs at scuba depths. About one inch. Appears
blue or purple at depth. |
Pericelis sp.
Makapu'u tidepool, Oahu
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PURSE SHELL FLATWORM
| Common in shallow water at night. Hides under stones among
Isognomon oysters
during the day. About 1.5 inches. |
Pseudoceros paralaticlavus
Makapu'u tidepool, Oahu |
Makapu'u tidepool, Oahu |
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GOLDRIM FLATWORM
| Uncommon in shallow water. About 2 inches. |
Callioplana marginata
Makapu'u tidepool, Oahu |
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MARGINED FLATWORM
| Under stones in tidepools & shallow reefs. Attains at least
2 inches. Hawaii & the Indo-Pacific. |
Pseudobiceros
sp.cf. dimidiatus
Blowhole, Oahu, 25 feet |
Fish Hole, Midway Atoll, 25 feet |
Kewalo Pipe, Oahu, 50 feet
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TIGER FLATWORM
| Occasional on reefs at scuba depths. Common at Midway
Atoll. About 1 inch. Undescribed. |
Pseudobiceros sp. 3
Makapu'u tidepool, Oahu
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Makapu'u tidepool, Oahu |
Makapu'u tidepool, Oahu |
Makapu'u tidepool, Oahu |
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HAWAIIAN SPOTTED FLATWORM
| Uncommon under rocks in tidepools and shallow reefs. Endemic to
Hawaii. About 2.5 inches. |
Pseudobiceros stellae
Makapu'u tidepool, Oahu |
Makapu'u tidepool, Oahu |
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STELLA'S FLATWORM
| Under stones in tidepools & shallow reefs. Attains at least
2 inches. Hawaii & the Indo-Pacific. |
Pseudobiceros periculosus
Makapu'u tidepool, Oahu |
Makapu'u tidepool, Oahu |
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| Under stones in tidepools & shallow reefs. Attains at least
2 inches. Hawaii & the Indo-Pacific. |
INDO-PACIFIC
Pseudobiceros
bedfordi
Wakatobi, Sulawesi, Indonesia |
BEDFORD'S
FLATWORM
| Uncommon at night on coral reefs. About 2.5 inches.
Indo-Pacific, absent from Hawaii. |
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