Tag: Magnum Sea Cucumber (Neothyonidium Magnum)

Whilst there is a possibility that the species feature here may not actually be the Magnum Sea Cucumber (Neothyonidium Magnum), it appears to be a close match, and it almost certainly belongs within the order Dendrochirotida.

Whatever the exact species, it is distinguished by the fact that usually only the feeding tentacles are visible, with the rest of the body burrowed into the sand. The tentacles are spread out in order to catch passing particles, and may be seen moving slowly, one by one, inwards towards the mouth area.

One of the best places to find this species is below Chaloklum Pier (Koh Phangan), where they may be either buried in the sand, or attached to the heavily encrusted pillars of the pier.

The Magnum Sea Cucumber (Neothyonidium Magnum) and its close relatives are easily mistaken for Feather-Duster Tube Worms (Sabellidae) or Sea Anemones (Actiniaria).

Whilst there is a possibility that the species feature here may not actually be the Magnum Sea Cucumber (Neothyonidium Magnum), it appears to be a close match, and it almost certainly belongs within the order Dendrochirotida.

Whatever the exact species, it is distinguished by the fact that usually only the feeding tentacles are visible, with the rest of the body burrowed into the sand. The tentacles are spread out in order to catch passing particles, and may be seen moving slowly, one by one, inwards towards the mouth area.

One of the best places to find this species is below Chaloklum Pier (Koh Phangan), where they may be either buried in the sand, or attached to the heavily encrusted pillars of the pier.

The Magnum Sea Cucumber (Neothyonidium Magnum) and its close relatives are easily mistaken for Feather-Duster Tube Worms (Sabellidae) or Sea Anemones (Actiniaria).

Alan's picture
Magnum Sea Cucumber (Neothyonidium Magnum)

If i am correct in my assumption that this is a Magnum Sea Cucumber (Neothyonidium Magnum), then this photograph would indicate that they are present in differing colour variations.

Alan's picture
Magnum Sea Cucumber (Neothyonidium Magnum)

This Magnum Sea Cucumber (Neothyonidium Magnum) was photographed at one of their most common locations, below Chaloklum Pier!