Kodiak Island residents have been reporting a large number of common murres washing up dead on local beaches.

Walruses were found washed up on the beaches from Cape Espenberg to Shishmaref and further west. Samples taken from the intestines of four walrus all had moderate to high levels of saxitoxin.

Marine researchers have found more than 100 dead sea lions -- most of them newborns -- washed ashore along a relatively small peninsula in northern Chile over the past three months.

A rescue center says California sea lions are coming down with a potentially fatal bacterial infection in near-record numbers.The Marine Mammal Center in Sausalito says more than 220 sea lions rescued this year have been diagnosed with leptospirosis.

The third such bite in two years prompted a police warning in the Aleutian Islands town.

The likely culprit is a toxic algal bloom, fueled by warmer ocean temperatures.