Eutheca

## Eutheca primus

Latest Mutations: Operculum, Retractable Cirri

This is a mollusc almost entirety surrounded by a spherical shell with eyes and cirri sticking out. It also has pectoral fins poking through that helps it swim off the seafloor. The cirri can be retracted and protected by a papery operculum. There are no predators for this wandering filter-feeder in the southern temperate ocean.

Status: Unlisted

Habitat: Subpolar Temperate Ocean, Polar Temperate Ocean

Niche: Pelagic Filter-Feeder

Diet: Any fresh meat it can get.

Size: 2.5cm (length - cirri to end)

Nutritional Need: 158 x 2.5/100 = 4NP

Food / Oxygen Requirement: 4 x 0.25 = 1NP per round (Needs to intake 1/0.7 = 1.4NP per round)/ 4 x 0.9 = 3.6NP

Characteristics: Anti-Freeze. Exothermic. Inflexible. Liquid Excretion. Permeable Skin. Osmoconformer (Quite High Salinity). Small-Body Circulation. Solid Excretion. Subzero Metabolism. Urine Storage.

Perception: Chemoreception 2 (chemicals 5m from mouth). Sight 2 (clearly up to 5m on either side, monocular vision).

Stats: Buoyancy -1. Coordination 2. Desiccation Resistance 1. Digestion 2 (100% Cellulose, Digests 70%). Filtration 1.5 (5/4 = 1.3x1 = 1.3). Immunity 2. Osmoconformer (High Salinity). Respiration 2 (10% off, Cutaneous Respiration, Ram Ventilation). Stamina 4. Strength 1. Support 1. Swim Agility 1. Swim Speed -0.2. Toughness 3. Tunnelling 1. UV Resistance 2. Walk Speed 0.2. Viscosity 1.

Intelligence / Behaviour: 1. Hungry > Search for food. 2. Food > Filter with cirri 3. Tired > Rest. 4. Pain > Swim away. 5. Maturity > Reproduce.

External Features: The body with red melanin pigmentation is almost entirely covered in a calcite shell with just a small space for the mouth and many cirri to poke out. The cirri can be retracted and protected by a papery operculum. Around the mouth are chemoreceptors. A pair of camera eyes with a calcite lens that changes shape with no blind spot on stalks, stick out through holes to the sides. There are three gill slits either side of its head. There is a muscular foot below wins mucus gland on the inside and pectoral fins sticking out the shell.

Internal Features: Each cell contains lysozymes and piezolytes. The body has a hemacoel with a dorsal vessel and a few small blood vessels passing the gills and saccate metanephridium. The blood is violet because it contains hemerythrin. Anti-freeze threitol sugar alcohol flows around the body. It has gonads towards the lower part and there are muscles across the body. From the mouth is a monogastric digestive system and there is also a bladder. The ganglia in head leads to a single, ventral nerve cord with nerves running off.

Reproduction: Sexual Reproduction. External Fertilisation. 1,000 eggs per spawning.

Castes/Phases: None.

Locomotion: Active (20NP). Wave Motion, can swim with pectoral fins.

External Features: Medium Pigmentation (2NP, +2 UV Resistance). Skin (3NP, +1 Immunity, +1 Respiration, +1 Stamina, +Stationary Respiration, +Cutaneous Respiration, +Permeable Skin). Shell (11NP, +3 Toughness, +1 Desiccation Resistance, +1 Support, -1 Buoyancy, -1 Swim Speed, -1 Swim Agility, -1 Walk Speed, +Inflexible, +Retreat Into Self, -Wriggling). Mouth (0NP, +1 Filtration). Many Cirri (7NP, +1.5 Filtration). Chemoreceptors (2NP, +2 Chemoreception). Camera Eye (11NP, +2 Sight, +Monocular Vision). Gills (4NP, +1 Respiration, +1 Stamina, +Ram Ventilation, +Only Works Underwater). Muscular Foot (3NP, +0.5 Walk Speed, +1 Tunnelling, +Wave Motion). Pectoral Fin (4NP, +1 Swim Agility, +0.2 Walk Speed, -0.2 Swim Speed, +Paddling, +Crawling). Mucus Gland (7NP, +1 Viscosity). Operculum (3NP).

Internal Features: Lysozymes (1NP, +Subzero Metabolism). Piezolytes (5NP, +Low Pressure Tolerance). Open Circulatory System w/ Pump Vessel (10NP, +Small-Body Circulation, +2 Stamina). Nephridium (11NP, +Liquid Excretion). Anti-Freeze Compound (2NP, +Anti-Freeze). Gonads (14NP, +Sexual Reproduction, +Hermaphroditism, +External Fertilzation). Muscular System (7NP, +1 Strength, +0.5 Walk Speed, +0.5 Swim Speed, +Wriggling). Monogastric Digestive System (19NP, +1 Meat Digestion, +1 Veg Protein Digestion, +1 Immunity, +Solid Excretion). Bladder (4NP, +Urine Storage). Centralised Nervous System (20NP, +2 Coordination, +Stimulus Response, +Subconscious Functions, +Body Movement Control).

Temporal Range: R. 239 - Present (Atrobocean Stage of the Oliverian)

Distribution: Southern Hemisphere

Lifespan: 2 years

Predecessor: Pantheca primus

Classification:

Discoverer: StealthStyle