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🧬 Biological Classification (Kingdom to Species)Styela clava

Kingdom

Animalia

Phylum

Chordata

Class

Ascidiacea

Order

Stolidobranchia

Family

Styelidae

Genus

Styela

Species

Styela clava

Ascidiacea🌊 Marine predator / filter feeder

Stalked sea squirt

Styela clava (Stalked sea squirt · Stalked sea squirt)

🛡️ Conservation Status (IUCN Red List)NE (Not Evaluated)

Not Evaluated (NE) on the IUCN Red List yet.

Geological Era

Extant

Diet

Marine predator / filter feeder

Length · Height

15~20cm · No data

Mass · Top Speed

No data · No data

Habitat & Fossil Locality

From the lower intertidal zone to a depth of 30 m, living attached to rocks, ropes, tires, and harbor concrete walls

💡 Everyday Comparisons for Size, Mass & Speed

💡 Usually 5–10 cm long, large individuals reach 20 cm, which is longer than a pencil (about 17.5 cm) (Comparison).
💡 It commonly lives attached to hard artificial objects such as harbor concrete walls, ropes, and tires (National List of Species of Korea).

Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.

#미더덕#Styela clava

📖 1. Overview

The stalked sea squirt is a sea squirt that lives attached to rocks, ropes, and harbor concrete walls and is commonly seen along Korean coasts. It has spread to many seas around the world.

🦴 2. Anatomy & Morphology

Its body is club-shaped, usually with a long stalk, and its tunic is rough and wrinkled. The incurrent and excurrent siphons sit at the front end of the body, and its color is yellowish-brown or grayish-brown.

🔍 3. Ecology & Behavior

It can live in both clean and polluted areas as well as in low-salinity water. It is a hermaphrodite that does not self-fertilize, and it spawns between spring and early autumn when water temperatures are 15 °C or higher.