CORRECTION: An earlier version of this story had the incorrect name for one of the beaches.

HONOLLULU (KHON2) — Shark warning signs were posted at Makaha and Laniakea beaches on Monday.

The city said an 8- to 10-foot-long aggressive shark was observed 200 yards from shore at Makaha Beach.

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An 8- to 10-foot shark was also seen about 150 yards from shore at Laniakea Beach. The city described this shark as non-aggressive.

Beachgoers are advised to consult lifeguards about ocean conditions.