The friend who sent the link said he's heard the dolphins sometimes surf
the phosphorescence but that they are usually daytime surfers:
.
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Photo courtesy of Paul Wilson at http://www.oceanfrontphotos.com
Well, he's come back with a different video, of dolphins off Newport Beach California (nice hood) which causes me to wonder what the dolphins, who in their own way are supposed to be very intelligent, what they are thinking when they see each other illuminated.
Duuuude! (surfer dolphin lingo)
Via the YouTube channel of Patrickc_la: