SAN DIEGO -- A new report is recommending trainers at SeaWorld try to reduce the stress experienced by killer whales, 10News reported.

The report released Tuesday by CAL/OSHA is in response to an attack by a killer whale that left a trainer injured.

The 39-year-old trainer was bit and dragged under water by a killer whale during a performance in November.

The trainer broke a bone in his left foot, but was able to make a full recovery.

Among the recommendations issued by CAL/OSHA:

Allow trainers sufficient time to focus on the care and training of the killer whales

Have more orcas within the population

Eliminate the stress within the performing population of orcas

Investigate portable breathing devices that could be worn by trainers whenever they enter the pool with a killer whale

Improve communication methods in the stadium