I: Sea urchin, Heart urchin, Sea biscuit, Sea star, Feather
star, Brittle Sea star (Phylum Echinodermata)
These animals are “Echinoderm”, which means spiny skin. They are found at every ocean depth, from the intertidal zone to the deep sea. At least 13 species of Echinoderms are found in Ao Tungkhen.
Sea urchin (Class Echinoidea)
Sea urchins are usually covered with lots of long, sharp spines that deter most predators. The spines also tend to break off inside their victim's flesh. Some sea urchins have venomous spines that can inflict serious pain.
I1: Long-spined sea urchin
Scientific name: Diadema setosum
I2: Sea urchin
Scientific name: Salmacis visgulata
Heart urchin (Family Loveniidae)
They are related to sea urchins and sand dollars. These burrowing animals are seldom seen alive. Their strange skeletons are sometimes seen though. Heart urchins are preyed upon by Helmet snails .
I3: Heart urchin
Scientific name: Lovenia elongate
Sea biscuits (Family Laganidae)
Sea biscuits are related to sea stars and have five-part symmetry. Living sea biscuits have tiny moving spines that tickle when you hold them.
I4: Sea biscuits
Scientific name: Echinodiscus sp.
Starfish or sea stars (Class Stelleroida )
They are among the most familiar of marine animals and possess a number of widely known traits, such as regeneration and feeding on mussels. Starfish possess a wide diversity of body forms and feeding methods. The extent that starfish can regenerate varies with individual species. The Knobby sea star use water to pump up their bodies. Don't remove them from water
I5: Knobby sea star
Scientific name: Protoreaster canarium
I6: Sand sea star
Scientific name: Astropecten bengalensis
Feather stars (Class Crinoidea)
Crinoids are characterized by a mouth on the top surface that is surrounded by feeding arms. They have a U-shaped gut, and their anus is locate next to the mouth. Their long spiny arms are fragile and break easily. Don't disturb them.
I7: Feather stars
Scientific name: Unidentified
Brittle sea star (Class Stellaroida )
They are the largest group of echinoderms, fastest moving, most nervous-falling apart easily. Although numerous, they are shy and seldom seen as they get hidden under coral rocks . Some live inside sponges and on other animals.
I8: Brittle sea star
Scientific name: Ophiactic sp.
Sea cucumbers (Class Holothuroidea)
They are NOT vegetables or worms. Like sea stars, they have 5-part symmetry but lengthwise. Sea cucumbers are found on the sea floor worldwide. There are a number of holothurian species and genera, many of which are targeted for human consumption. Some varieties of sea cucumber are said to have excellent healing properties. There are pharmaceutical companies being built based on gamat. Extracts are prepared and made into oil, cream, or cosmetics.
I9: Garlic bread sea cucumber
Scientific name: Holothuria scabra
I10: Remarkable sea cucumber
Scientific name: Holothuria notabilis
I11: Pink warty sea cucumber
Scientific name: Cercodesma sp.
I12: Purple cucumarid sea cucumber
Scientific name: Unidentified
I13: Wormfish sea cucumber
Scientific name: Synapta sp.