Olympia was a well know matriarch, who had been seen since 1979. Between 1983 and 1996 Olympia had 5 calves.
Two of those (Anchor born 1983 and Cascade born 1987) had calves of their own making Olympia a grandmother! Anchor's calf was born in 1990 (when she was 7), and Cascade's was born in 1996 (when she was 9).
There was no evidence that Fissure was related to Olympia in anyway, they just seemed to be enjoying each others company, diving in sync for over an hour. When she made a deep dive we suspected she was going to leave us.