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In my few encounters, Sharks tend to avoid any dolphin species including porpoises and Bottle-nose. In the presence of humans it has been my experience that dolphins tend to be more aggressive towards sharks, running them off. I don't read too much into it, because I imagine they probably do the same when we are not around. I would imagine that sharks compete for the same food source so they run them off to ensure food availability. Dolphins will also not try to steal your catch, at least not in my experience. My expereince with dolphins is limited though, I have only been in a pod while spearfishing twice and both times where due to the fact that there was a bait ball, so there where a lot of predators competing for prey fish. Including Sailfish and Marlin, which the dolphins seem to use as the billfish bat thru the ball stun the fish and then the pod will grab some of the stunned fish. My personal experience is that dolphins know what spearguns are, and don't like them, they generally don't approach if you are spearfishing. The release of a spearshaft and the band pop is a very distinct vibration, many apex fish including large grouper and sharks are keyed into it, in some areas. I remember one time, I pulled the trigger and had two blacktips on me within a split second. The fish was dead on impact so the only vibration was the gun going off. Anyways I would guess that dolphins key into this as well and avoid it. That being said, when I am in the water without a gun they always approach check me out, push their babies towards me to check me out. I think it's akin to us going to sea world, it really is like hey kids look it's a human check it out, get a good look you don't get to see these too often. One time my dog jumped in and the babies would swim about a foot under it, to make it go crazy barking. I think they loved the sound as when she would stop they would circle back and get her going again. (Side note: I think dolphins are into ASMR if you are ever in the water with them make sounds they love it). It was the one time I thought to myself, I hope dolphins don't eat dogs because she is a beagle, so small enough. Anyways, they don't, and I am glad they don't hunt humans, if they did we would not be able to enter the water. A human hunting dolphin would be a fearsome predator and absolutely terrifying in a serial killer kind of way. They are really smart and you get a feel for how smart they are when you have natural encounters with them. |