Harbor seals are small compared with other phocids species such as grey seals, all of which are known to fast for the entire lactation period.

与其他 phocids 物种（如灰海豹）相比，港海豹体型较小。众所周知，灰海豹在整个哺乳期都禁食。

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Normally, male grey seals live to be around 25 years old in the wild, but under the good care of the organization, Yulelogs just turned 31.

通常情况下，野外的雄性灰海豹能活到25岁，但在该组织的悉心照料下，Yulelogs 刚满31岁。

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Ms Bell said while grey seals do travel upriver, their bodies are adapted to salt water conditions.

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In the death zone between the rock shoals and the breakers, two grey seals float and turn, fishing, peering, wallowing like fat ladies in a spa pool.

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Dan Jarvis, from the Cornish Seal Sanctuary at Gweek in west Cornwall, said he is concerned the activity could discourage grey seals from using the area for breeding.

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