I'll post some videos and articles regarding just how impressive sharks can be. I'll focus on the Mako shark since it'a my favourite and is one of the contestants in this match-up.
"On the morning of New Year's Eve, Gwin and Destin realtor Tony Beaver had taken Beaver's 23-footer, At Last, out to fish for flounder around the wreck of the Miss Louise about a mile off Crystal Beach.
"There were bottle-nosed dolphins around all morning, but most of them disappeared after a couple hours," said Gwin, an avid fisherman and surfer. "One dolphin hung out around the boat longer than any others and picked off some big redfish we caught."
The dolphin that stayed around for the feast being tossed from At Last soon became lunch for a mako shark that was probably 15 feet long, Gwin said.
The friends then got a close encounter of how savage nature can be.
"Out of the corner of my eye, I see the dolphin jump straight out of the water about 20 feet," Gwin said.
That jump was not the usual show that they put on for the gawking humans, but an attempt to get away from the shark. It was the dolphin's last move before it was disabled when the shark bit off the dolphin's tail. Blood began to fan out in all directions from the dolphin that was now trying to keep its blowhole above the water.
"We were in shock for a few seconds," Gwin said. "Then we hurried to pull the anchor and drive toward the dolphin."
Moving closer, they saw that the whole tail of the dolphin was missing and gushing so much blood that they could smell it in the air from 20 to 30 feet away.
The shark was unconcerned with the nearby boat and circled the dolphin a few more times, only to grab the dolphin "like a dog would a bone" and thrash around in the water.
Gwin said that the dolphin struggled to the surface once more after the shark let go, but then gave up and sank a few feet below the surface where the shark took a final hold of what was left of the dolphin and headed down below.
"All that was left was a huge slick of dolphin blood about 100 yards wide," Gwin said. "This was one of the craziest things I have seen a shark do.""
"shark has been suspected of biting a chunk out of the tail fluke of a killer whale well-known to whale and dolphin watchers in Scotland.
Nicknamed John Coe, the male orca can be indentified by a notch on its dorsal fin.
The injury to its tail was spotted during a survey by the Hebridean Whale and Dolphin Trust (HWDT).
The trust said consultations with experts suggested that it was "almost certainly" caused by a shark.
John Coe is one of a small community of orcas regularly seen off Scotland's west coast.
Members of the group have also been spotted at times off Peterhead and Girdleness in Aberdeenshire, Ireland's west coast and off Pembrokeshire in Wales.
Image caption John Coe can be identified by a notch on its dorsal fin
The group, which is believed to be the UK's only resident population of killer whales, is thought to contain just nine older animals.
There are fears that it will eventually die out after becoming isolated from other killer whale populations.
In a statement, the trust said: "Notable highlights during 2014 included two separate encounters with what is believed to be the UK's only known resident population of killer whales.
"This small, isolated population of orca has never produced offspring since studies began, raising fears that it faces imminent extinction."
Image caption A young minke whale was spotted during the recent survey
It added: "Evidence of drama emerged when one of the group's males - known as John Coe - was observed with a large area of his tail fluke missing.
"Consultations with experts suggest that this was almost certainly the result of a shark attack."
The trust said it could not "realistically speculate" on the kind of shark involved.
HWDT carried out its latest survey of whales, which included a young minke whale, dolphins, porpoises and plankton-feeding basking sharks, between May and October last year.
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