Skip to main content
Today is World Environment Day!
Close

Marten's Sidegill Slug

Berthella martensi

Photo by Blogie
Published on Project Noah
Zoom
NominateNominate for Wildlife Photograph of the Month
reportFlag Spotting

6.92834, 125.679

Field Notes

Description:

Also known as Marten's Berthella and Berthella Sea Slug, this pleurobranch has a dark-brown mantle and orange warts. Berthella martensi, however, also appears in other color variations. They feed on hydroids, coral, sponges and sea anemones, and grow to a length of about 10cm.

Habitat:

Found singly or in pairs in coral and rocky reefs, among sand and rubble areas, at depths of 2 to 30m.

Notes:

I spotted this critter -- actually there were two of them -- at exactly 50 feet. The one I photographed was about 10cm long. The 3rd photo shows its underside.

Reference Links:

Berthella martensi, Berthella martensi (Pilsbry, 1896) - Pleurobranchidae » Nudi Pixel

Species ID Suggestions

Marten's Berthella

Berthella cf. martensi

Reference Link
SamanthaCraven
1

Comments (2)
Blogie
Thanks very much for the ID, Sam!
SamanthaCraven
Hi Blogie, It's a Pleurobranch - looking at pictures it looks very variable. Got my ID from Coleman's Nudibranch Encyclopedia.

Spotted for Missions

Mission
Opisthobranchs & Nudibranchs of the World
Mission
Davao Gulf Marine Life
Mission
Mollusca

Tags

Photographed
PublishedFebruary 12, 2012

Community Sponsor

Butterfly
Become a Community Sponsor and Help Grow our Global Movement!

Accelerate our Mission to Photograph 
Every Species in the World!

Butterflies icon
Become a Community Sponsor

Wildlife Community

Wildlife Community

Join a worldwide community passionate about wildlife and nature!

Join Project Noah

Nature School

Nature School

Transform your green space into a curiosity-creating nature classroom!

Visit Nature School

Wildlife Game

Wildlife Game

Defend wildlife throughout the jungle in thrilling nature game!

Play Baboon

Nature & Conservation Organizations

Brands & Mission-Focused Companies