Sun and Duncan Corals Eating Live Brine Shrimp
 
Tubeastrea (Sun Coral) 
- notice how effective and sticky the nematocysts are in catching brine
http://www.youtube.com/watch?v=GNn9Hxs-h5o
 
Tubeastrea (Black Sun Coral)
- there is one brine which is fighting for its life trying to escape
http://www.youtube.com/watch?v=vjRumggrvsk
 
Duncan 
- the nematocyst are nowhere as effective as the sun corals
http://www.youtube.com/watch?v=VI56w5dnPFw
 
Dendro
- probably the most effective
http://www.youtube.com/watch?v=NVs7m8JliOE
 
Duncan (Green) 
- larger colony uses bulk to envelop brine
http://www.youtube.com/watch?v=pUHav13-G_o