{
  "params": {
    "kind": {
      "type": "choice",
      "options": [
        "green",
        "loggerhead",
        "hawksbill",
        "leatherback"
      ],
      "default": "green",
      "label": "Kind",
      "describe": "Species: green (olive-brown shell, grey-green skin), loggerhead (reddish shell, big head), hawksbill (amber-and-dark tortoiseshell streaks, pointed beak), leatherback (1.8 m, black leathery shell with long ridges and white spots, no scutes)."
    },
    "algae": {
      "type": "toggle",
      "default": false,
      "label": "Algae",
      "describe": "Patches of green algae and a few barnacles on the shell: an old, slow turtle."
    },
    "seed": {
      "type": "range",
      "min": 1,
      "max": 30,
      "step": 1,
      "default": 5,
      "label": "Markings",
      "describe": "Seed for the shading of each shell plate and where algae grows; every number is a different turtle."
    },
    "size": {
      "type": "range",
      "min": 0.15,
      "max": 2.5,
      "step": 0.05,
      "default": 1,
      "label": "Size",
      "describe": "Uniform scale on top of the species size. 1 is an adult (1.1 m shell); 0.15 is a hatchling heading for the sea; 2.5 is a giant island-sized legend turtle."
    }
  },
  "presets": {
    "hawksbill": {
      "kind": "hawksbill",
      "seed": 12
    },
    "old loggerhead": {
      "kind": "loggerhead",
      "algae": true,
      "size": 1.1
    },
    "hatchling": {
      "kind": "green",
      "size": 0.15
    }
  },
  "night": null
}