Toogood said three "good sized sharks" were also spotted near the whale.
Scientific samples to be taken before the whale was buried in the afternoon,
It's the first time, he's aware, that a Southern Bottlenose has been found in the area, Toogood said.
A post on the Project Jonah Facebook page said the beach has several hazards, including stones which can easily cause wounds to a stranded whale and a deep drop-off close to shore as well as a strong undertow, "which was causing the whale to be rolled up the beach in the surf, highly stressful for a stranded whale," it said.
Whale or dolphin strandings should be reported to the DoC emergency hotline 0800 DOC HOT (0800 362 468).