Kelp Forest

import { createAsset } from 'https://gaitkit.com/cdn/kelp-forest.mjs';

const kelpForest = createAsset();
scene.add(kelpForest);                      // rests on y = 0, front faces +Z

// 'kelp_0' pivots on its hinge: -8° to 8° around x
kelpForest.getObjectByName('kelp_0').rotation.x = THREE.MathUtils.degToRad(-8);

import { useMemo } from 'react';
import { createAsset } from 'https://gaitkit.com/cdn/kelp-forest.mjs';

export function KelpForest() {
  const model = useMemo(() => createAsset(), []);
  return <primitive object={model} />;
}

# Import kelp-forest.glb (download below). Moving parts are separate nodes, pivoted on their hinge.
$KelpForest/kelp_0.rotation_degrees.x = -8

// Import kelp-forest.glb with glTFast (com.unity.cloud.gltfast).
transform.Find("kelp_0").localEulerAngles = new Vector3(/* x: */ -8, 0, 0);