That's the most in 45 years of annual reports published on the FWC website.

The highest death toll was in Lee County on the state's southwest Gulf coast, where 25 manatees were killed by boats. The second highest was in Brevard County on the Atlantic coast, where 15 died in the Indian River Lagoon. Those two areas tend to have high populations of manatees due to vast seagrass habitats.

"Hotspots are the Indian River Lagoon and Lee County ," Martine deWit, a FWC veterinarian, told Florida Today.

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Cold weather is also dangerous for manatees, causing 56 deaths so far in 2019, the second highest in the past five years. Water temperatures below 68 degrees can cause a condition known as manatee cold-stresssyndrome, which results in potentially fatal issues, including weight loss and dehydration, according to the FWC.

While 44 of those died earlier this year, three died in November and nine in December. Cold weather that moved in after a warm October "surprised some manatees who were still on the move, and we have already documented lethal cold stress, which is relatively early this year," deWit said.

Manatees migrate to warmer waters during the cold months, meaning they are move active in areas where boaters are present. The FWC and other agencies work to increase public awareness during those times.

"These are very preventable deaths for manatees, and that's why we're out here really stepping up enforcement ," FWC Officer Brian Norris told WBBH-TV in Lee County.

Collisions with the gentle giants can