[BlueTrend Mini Classroom] Plumularia / Gymnangium (Tree Hydroid) | Marine Habitat & Species Micro-Education Series Part 7 ft. Ocean Conservation Administration & Keelung City Government

（Don't forget to turn on the subtitles！）

Marine Habitat Micro-Education Series

In the intertidal to subtidal zones where tides ebb and flow, we can spot tree hydroids on rocky walls — their well-developed branching structures extended to filter plankton from the passing current. Because their structure resembles the gorgonian / sea fan of octocorals, they are often mistaken for one another. A closer look reveals that the polyps of tree hydroids are white and club-shaped, quite different from the flower-like polyps of sea fans. Tree hydroids are frequently home to many residents, some of which have such excellent camouflage that they are nearly impossible to spot — a true test of your keen eye! Let's get to know them together through the Marine Habitat & Species Micro-Education Series!

00:35 Environmental Introduction
02:16 Pteraeolidia ianthina, Favorinus japonicus
04:09 Isopoda (alien isopod)
04:52 Pteria heteroptera
06:04 Safety reminders for observing tree hydroids
06:43 Tips for observing tree hydroids

What Is the Marine Habitat & Species Micro-Education Series

BlueTrend Marine Habitat & Species Micro-Education Series
Co-produced with the Ocean Affairs Council — Ocean Conservation Administration and Keelung City Government
Aiming to help everyone rediscover the ocean and its inhabitants in a relaxed, easy-to-understand way

Contents include

1. Introduction to Wanghaijang Chaoching Bay environment
2. Ocean Citizen Scientists
3. Sea Lettuce
4. Rocky Tide Pool
5. Underneath the Rock
6. Crustose Coralline Algae
7. Soft Coral
8. Tree Hydroid
9. Crown Sea Urchin
10. Sandy Bottom

Pteraeolidia ianthina

Favorinus japonicus

Pteria heteroptera

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Related Links:

1. Ocean Affairs Council — Ocean Conservation Administration
2. Keelung City Government
3. iOcean Marine Conservation Network
4. BlueTrend Ocean Science Video Channel