WHITSUNDAY residents are being reminded of the need to be 'croc-wise' following a couple of sightings in the past week.

On Sunday afternoon, Alan Heat was enjoying the view at his Shute Harbour home when he spotted what he thought was a single seat kayak in the water at Cane Cocky's Cove.

Mr Heat said the murky water made it difficult to distinguish but he later realised he'd spotted a croc.

"I notified National Parks at Jubilee Pocket and suggested they put a few signs up to say a few crocodiles have been spotted," he said.

"A lot of families go there and camp on the weekends."

And that's not the only croc spotted in just the last few days.

On Friday, Jo Collison posted photos on Facebook of a large croc cruising the waters off Sunset Beach near the Gloucester Passage.

"Spotted this big fella making the most of the perfect day in paradise, cruising the current past Sunset Beach heading towards Gloucester Passage around 7am this morning," she posted.

"Seriously though we will definitely be keeping the kids out of the water today."

A spokesperson for the Department of Environment and Heritage Protection (EHP) said it was important all crocodile sightings were reported as soon as possible to the EHP.

They said although crocodiles were less active during cooler months, they became more noticeable as they used sunshine to regulate their body temperature.

It is not unusual to see crocodiles laying in the sun beside rivers and streams.

To report a crocodile sighting call EHP on 1300 130 372.

For more information visit https:// http://www.ehp.qld.gov.au/.