Can anybody help me to identify this benthic specimen ?

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Arvind Singh

It seems some species of Ceramium (Red alga)

Godfried Van Moorsel

1762: a nemertean worm

1763, 1765, 1767: Ceramium

1823: a polychaete, possibly of the family Phyllodocidae

Sekar Veeramuthu

Thank you Godfried and Arvind

Kaladharan P

certainly not a seaweed

Razy Hoffman

Number 1 and 5 are warms

#2-4 are red species of the genus Ceramium, Pictures don't give enough data to identify the species.

thank you Razy Hoffman

Vishal Patil

Yes it is Ceramium confirmed because I have identified this last month but for species check proper details. Try to get fresh sample for identification, you will get good images.

Peter Striplin

I agree with Godfried. The first and last photos are of a nemertean and the last has parapodia somewhat like the Phyllodocidae.