It has been a “banner year” for tagging sharks as part of the ongoing research into the top predator’s behavior off the coast of Massachusetts, state shark expert Greg Skomal said.

Skomal tagged four great white sharks Tuesday, bringing the total to 12 this season, more than he has ever tagged this early in the season, he tweeted Tuesday.

The tweet from the Division of Marine Fisheries expert came about an hour after the Head of the Meadow Beach in Truro was closed because of a confirmed shark sighting, according to the Atlantic White Shark Conservancy’s Sharktivity app, which tracks the creatures.


The beach closed around 11:40 a.m., and the closure was expected to last about an hour, officials tweeted.

Skomal, senior fisheries scientist for the state, is researching not just how great white sharks appear in the area this summer, but also their hunting and feeding habits, the Globe reported recently.

This effort to understand natural feeding habits, which could help people understand better how to avoid sharks, comes a year after the first fatal shark attack in Massachusetts in more than 80 years.

The closure of the Head of the Meadow beach was one of 10 great white shark sightings along Atlantic-facing beaches on Tuesday by 2 p.m., according to the Sharktivity app. One great white was spotted in Cape Cod Bay on Tuesday, according to the app.

One of the sharks seen in the Atlantic was Snowflake, a female great white previously tagged by Skomal and the conservancy in 2018. Snowflake was named by a donor to the conservancy.

John R. Ellement of the Globe Staff contributed to this report. Maria Lovato can be reached at maria.lovato@globe.com. Follow her on Twitter @maria_lovato99.