Balanoglossus is a genus of ocean-dwelling acorn worms. It has zoological importance because, being hemichordates, they are an "evolutionary link" between invertebrates and vertebrates. Balanoglossus specimens are deuterostomes, and resemble the chordates in that they possess branchial openings. [1]

Balanoglossus is a burrowing and exclusively marine animal. It is found in shallow waters between tide marks along the coast of warm and temperate oceans. Balanoglossus is world-wide in distribution. Balanoglossus is tubicolous living in …

Balanoglossus is a marine animal and inhabits all the seas of the world. About 20 species of Balanoglossus have been recorded in the tropical and sub-tropical seas.

Balanoglossus gigas is a species of large free-living enteropneust (acorn worm) found in the Atlantic Ocean. It is the largest acorn worm currently known, and has a strong iodoform -like odour. It is bioluminescent.

Balanoglossus belongs to class Enteropneusta, phylum Hemichordata. It is a marine animal, widely distributed in all seas of the world. It lives in burrows (Fig. 28.1) in inter-tidal zone and shallow water, though some species may live in somewhat deeper zones.

In this article we will discuss about the external morphology of balanoglossus with the help of suitable diagrams. Shape, Size and Colouration: The body of Balanoglossus is soft, elongated, cylindrical, bilaterally symmetrical, being richly ciliated all over and covered with mucus.

Balanoglossus is a tubicolous or burrowing and exclusively marine animal. It is found in shallow waters between tide marks along the coast of warm and temperate oceans. Balanoglossus is world-wide in distribution.