Harpa harpa – beautiful predator snail

Harpa harpa

The family Harpidae comprises elegant marine gastropods with shell, resembling the strings of a harp. They are nocturnal hunters, hiding in the sand during the day and feeding on crabs and shrimps at night. The prey is enveloped by the foot and mucus, then saliva containing digestive enzymes is injected. Finally, partly digested crab is sucked out by the mollusc.

Black Friday From Reef ID Books

Make your Black Friday memorable! 40% off on all our English language books.
Spend less than 9 dollars and receive a multi-platform PDF book. You can read it on any device and take it with you on your diving holidays.
1. Nudibranchs of the Coral Triangle
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2. Reef Fishes of the Coral Triangle
https://gumroad.com/l/reef-fishes/vksh75u

3. Coral Reef Crustaceans
https://gumroad.com/l/ZLGpK/p00onr7

4. Coral Reefs Indonesia
https://gumroad.com/l/IiAyS/hacthnf

5. Coral Reefs Philippines
https://gumroad.com/l/emmNI/c5x06x3

6. Coral Reefs Maldives
https://gumroad.com/l/gkcwt/q7ipn8u

Black Friday ends on Monday 11.59 p.m.

Tiger Pistol Shrimp Alpheus bellulus: sisyphean task, useless but funny to look at!

It is always nice to look at someone’s work, especially when it is done with endless enthusiasm. Our shrimp lives in burrows with Cryptocentrus gobies (Y-bar Shrimp Goby, Cryptocentrus fasciatus in our case). The shrimp digs and maintains the burrows. With a soft sand bottom, it is easier to dig a home than to maintain it. Watch this video and you will understand why!

Amazing mimicry: Pseudoceros imitatus

Pseudoceros imitatus (Mimic Flatworm), one of my favourite flatworms, mimic Phyllidiella pustulosa (Pimpled Phyllidiella), very common toxic nudibranch. Phyllidiella can emit very toxic substances on the skin, extracting them from the sponges it feeds on. Our flatworm unfairly enjoys poisonous fame, avoided by predators!

Pseudoceros imitatus (Flatworm!)

Can you tell flatworm from nudibranch on this photo?

Do you see the difference?

Reef ID Books releases Coral Triangle Nudibranch guide

April, 14 the new book from Critter Academy series, Nudibranch of the Coral Triangle has been released on several platforms

– Amazon (paperback and eBook

– iTunes bookstore (eBook)

– Kobo (eBook)

– PayHip (PDF version)

This book is a field guide, an assistant for the identification of nudibranchs species in the region. The book presents 1000+ species nudibranchs that can be found and photographed in depths and regions accessible to recreational diving

 

Enjoy your reading!

Reef ID Books releases Reef Fishes of the Coral Triangle guide

Reef ID books have released their guide to the Reef Fishes of the Coral Triangle.

The book catalogs over 1400 species of fish that occur in this biodiverse region. Each species has been photographically described, and some also have images depicting color variations, age, and differences in gender.

Reef Fishes of the Coral Triangle is available to buy or download now, from Amazon or iTunes.