Professional surfer, Garrett McNamara, aka Gmac, may have broken another record. This Tuesday off the coast of Nazaré, Portugal, McNamara caught a wave that onlookers estimated to be about 100 feet high. See a teaser video of the achievement here.

VIDEO: Surviving a Big Wave

The 45-year-old Pittsfield, Mass., native is known for breaking surfing records. In November 2011, McNamara rode an enormous 90-foot wave at Praia do Norte, also off the coast of Nazaré, Portugal. For that accomplishment, “Gmac" was entered in the spring Billabong XXL Global Big-Wave Awards.

See a bunch of images here.

Photo: Garrett McNamara riding a big wave at Avalanche, off the coast of Oahu, Hawaii. Credit: Sean Davey/Corbis