before_sent:  The photic zone includes the oceans from the surface to a depth of 200m ; it is the region where photosynthesis can occur and is, therefore, the most biodiverse.
before_sent_with_intent: <coherence>  The photic zone includes the oceans from the surface to a depth of 200m ; it is the region where photosynthesis can occur and is, therefore, the most biodiverse.
after_sent:  The photic zone includes the oceans from the surface to a depth of 200m , where photosynthesis can occur and is, therefore, the most biodiverse.