Animating the escape response of the sea anemone, Stomphia coccinea from the starfish, Dermasterins imbricata modeled using implicit surfaces

Many of the most interesting simulations in the biological world have to do with interactions between species. The predator-prey interactions among aquatic organisms are an interesting part of the natural world which has not been seen much in computer animation. This paper explores the interaction between various sea anemones and the starfish Dermasterias imbricata. Although a simulation between a specific sea anemone, Stomphia coccinea to Dermasterias imbricata was created, an approach was taken such that different anemones with minor parameter changes can be used to replace Stomphia coccinea. The animation was created using a parametric key-frame approach using tracks and a hierarchical procedural implicit modeling method. The anemone and starfish were modeled using the Blob-Tree. Using a hierarchical construction, the model is refined locally and deformed globally at arbitrary layers while maintaining the consistency and integrity of surface details. A hierarchy of tracks was used to control the object's motion.